GNSS-based water level gauge operating system and operating method

Abstract

The present invention relates to a GNSS-based water level gauge operation system and operation method for installing and efficiently operating GNSS-based water level gauges in multiple locations across the country, which can measure the water level (elevation of the water surface) of a reservoir with high precision by receiving correction data from the water level gauge in real time independently without the need for a separate base station. The present invention provides a GNSS-based water level gauge operation system characterized by comprising: a GNSS-based water level gauge installed on the water surface of a reservoir that receives spatial coordinate data from an artificial satellite and generates water level data by applying RTCM correction data; a remote monitoring server (300) that wirelessly receives water level data and equipment status data from the GNSS-based water level gauge, stores and analyzes the data, and transmits it to a water level gauge operation server; and a water level gauge operation server (500) that receives water level data and equipment status data from the remote monitoring server, detects an abnormal state, and transmits the analysis result to an administrator terminal.

Description

Technology Field

[0001] The present invention relates to a water level gauge (water level measuring device) operating system based on GNSS (Global Navigation Satellite System) technology, and more specifically, to a GNSS-based water level gauge operating system and operating method for installing and efficiently operating a GNSS-based water level gauge in multiple locations across the country, which can measure the water level (elevation of the water surface) of a reservoir with high precision by receiving correction data from the water level gauge in real time without the need for a separate base station. Background Technology

[0003] Generally, a water level gauge (water level measuring device) is a measuring device that primarily measures the water level (height of the water surface) of a reservoir. It monitors and measures changes in water level in various places such as rivers, dams, and reservoirs, manages the water levels of reservoirs, etc. to utilize water resources efficiently, and is used to prevent damage caused by floods or water disasters.

[0004] Depending on the measurement method, water level gauges are divided into contact gauges that measure the water level directly and non-contact gauges that measure without direct contact, and there are various types such as pressure, radar, ultrasonic, and float types.

[0005] The structure and method of water level gauges vary depending on the installation environment, so an appropriate type must be selected by considering the reservoir's shape, water depth, flow velocity, and surrounding topography.

[0006] For example, radar or ultrasonic types are suitable for deep reservoirs, while float or pressure types are used for relatively shallow waterways.

[0007] Water level data collected through water level gauges is utilized in real-time in conjunction with reservoir hydrological control, water supply planning, and flood warning systems, and is also used to analyze and respond to water level changes in advance through prediction models linked with meteorological information.

[0008] Since level gauges are exposed to the external environment, waterproof and dustproof design is essential, and maintaining measurement accuracy through separate, regular inspections and calibration is a key maintenance factor.

[0010] As one of such devices, Korean Patent Registration No. 10-0656072 (Title: Float-type water level gauge using an encoder), as disclosed in the publication, the float (7) floating on the water surface, the pulley (10) installed on a base member (B) with a wire (5) connected to the float (7) wound so as to rotate by the lifting and lowering of the float (7) according to changes in the water level, and the encoder (40), converter, and water level display device (50) configured to measure the amount of rotation of the pulley (10) according to the lifting and lowering of the float (7) to measure the water level of a reservoir or dam, etc., wherein a plurality of gears having different gear ratios are provided on a power transmission shaft (21) provided at the center of one side of the pulley (10) to accelerate the amount of rotation of the pulley (10) at a constant speed ratio and transmit it to the encoder (40). An acceleration gear section (20) is provided in which timing gears (24)(25)(26)(27) are sequentially connected by a belt (28)(29);On a power transmission shaft (23) that receives power from the acceleration gear unit (20) and transmits the rotational force to the encoder (40), a primary coupler (31) is formed with one end coupled to the power transmission shaft (23) and on the rear side, guide protrusions (34a) (34a′) are formed facing each other, having a guide surface (36) with one or more screw fixing grooves (38) formed thereon and having a certain displacement in the inner circumferential direction to have a predetermined step difference with the outer circumference of the coupler. On one side coupled to the primary coupler (31) to transmit the rotational force transmitted from the primary coupler to the encoder, fitting protrusions (34b) (34b′) of a certain height are formed protruding so as to be fitted between the guide protrusions (34a) (34a′) of the primary coupler, with a clearance adjustment clearance space (35) formed spaced apart by a certain distance between the mutually interlocked ends, and on the rear side, the A float-type water level gauge using an encoder is described, characterized by being configured such that a variable gap coupler (30) is installed, which is configured such that a secondary coupler (33) equipped with a power transmission shaft (23′) connected to an encoder (40), and a gap adjustment member (32) is coupled to the guide surface (36) of the primary coupler (31) and the secondary coupler (33) so as to be slidable, with slide parts (35a) (35b) having a predetermined length in the circumferential direction protruding oppositely on both sides of one surface, so as to be slidable, and is coupled to the guide surface (36) of the primary coupler (31) to adjust the gap of the gap adjustment clearance space (35) formed between them.

[0011] In addition, Korean Patent Publication No. 10-2025-0012862 (Title: Reservoir Water Level Measuring Device), as disclosed in the publication, a reservoir water level measuring device for measuring the water level of a reservoir comprises: a floating body formed to have buoyancy so as to be exposed above the water surface of the reservoir; a binding unit mounted on the bottom of the floating body and having a ring-shaped restraining ring; an ascending / descending guide unit having an anchor installed on the underwater bottom surface of the reservoir to guide the vertical ascending / descending of the floating body according to water level fluctuations, a restraining line with one end fixed to the anchor and extended through the restraining ring, and a weight coupled to the other end of the restraining line to maintain the restraining line in a tensioned state even with water level fluctuations; a solar panel mounted on the upper surface of the floating body; and a sensing unit mounted on the floating body to detect information on the ascending / descending fluctuation of the floating body. A reservoir water level measuring device is described, characterized by comprising: a local terminal unit that operates by power supplied from the solar panel and charged in a charging unit, and transmits information on the rise and fall fluctuation of the floating body detected by the sensing unit as water level information to a receiving address of a transmission target through an antenna installed on the floating body.

[0012] In addition, Korean Patent Registration No. 10-2635187 (Title: Floating Water Level Measuring Device), as disclosed in the publication, comprises: a buoyancy body having the shape of a concave bowl with an open top to float on the water surface, to which an upper cover having a through hole in the center is attached to the upper part; a weight that sinks to the bottom surface underwater by gravity; a wire winding device installed at the center of the upper surface of the upper cover and winding or unwinding a wire connected to the weight while maintaining a predetermined tension; and a mobile station GNSS module that generates positioning information from a signal received from a GNSS satellite. A floating water level measuring device is described, comprising a positioning information transmitting unit that transmits the positioning information to the outside through a communication module, a plurality of solar cell modules that convert sunlight into electrical energy and supply it to electrical equipment, and a plurality of bird landing prevention pins formed to be pointed toward the top, the weight is provided with a wire connecting ring to which the wire is connected at the top, a plurality of inlet holes communicating with the internal space are formed on the surface of a weight structure that is hollow inside, and a plurality of moisture absorbent bags containing a polymer absorbent are filled in the internal space of the weight structure.

[0013] Meanwhile, Korean Patent Publication No. 10-2025-0068288 (Title: Satellite Positioning System-based Buoy-type Automatic Water Level Measuring Device) describes a satellite positioning system-based buoy-type automatic water level measuring device installed in a reservoir, as disclosed in the publication, characterized by comprising: a GNSS module that receives coordinates from a GNSS (Global Navigation Satellite System); a power supply device that supplies power to the GNSS module; a water level calculation processing unit that calculates water level data by measuring the water level of the reservoir where the automatic water level measuring device is located using the GNSS coordinates; and a communication module that transmits the water level data. Prior art literature

[0015] Korean Patent Registration No. 10-0656072 (Published Dec. 08, 2006) Korean Patent Publication No. 10-2025-0012862 (January 31, 2025) Korean Patent Registration No. 10-2635187 (Published Feb. 08, 2024) Korean Patent Publication No. 10-2025-0068288 (May 16, 2025) The problem to be solved

[0016] However, the water level measurement methods of the conventionally proposed devices described above had a problem in that when continuously measuring using sensors such as pressure or radar types, the sensor device itself would corrode or become contaminated due to the influence of the surrounding environment, causing errors in the measurement values.

[0017] Furthermore, in order to improve the accuracy of conventional GPS position measurement, there was a problem in that it required a complex process of transmitting RTCM data from a base station to a rover station via an RTK (Real Time Kinematic) system, and generating position data by calculating the correction (RTCM) data values ​​with the GGA (e.g., GPGGA) data values ​​received from the satellite by the rover station.

[0018] In addition, conventional water level measuring devices using GNSS technology had the problem of being uneconomical because they required the construction of a base station to receive correction data in real time, which was expensive.

[0020] The objective of the present invention is to provide a GNSS-based water level gauge operation system and method that enables high-precision measurement by installing a GNSS-based water level gauge in multiple locations across the country, which can receive correction data in real time from the water level gauge itself without the need for a separate base station and measure the water level (elevation of the water surface) of a reservoir with high precision, thereby preventing data measurement contaminated by being affected by the surrounding environment, and making it usable for flood warning and water resource management. Furthermore, the water level gauge itself receives RTCM (Radio Technical Commission for Maritime Service) correction data from a satellite and calculates water level data through a process of receiving GGA data (e.g., GPGGA data from a GPS system) and performing calculations. By utilizing solar power generation, the water level gauge can be operated in an eco-friendly manner while supplying and charging power without a separate additional power supply, thereby enabling energy independence, long-term unmanned operation, and efficient monitoring through remote access. means of solving the problem

[0022] The present invention, for achieving the above-mentioned purpose, provides a GNSS (Global Navigation Satellite System)-based water level meter operating system comprising: a GNSS-based water level meter installed on the surface of a reservoir to receive spatial coordinate data from an artificial satellite and generate water level data by applying RTCM correction data; a remote monitoring server (300) that wirelessly receives water level data and equipment status data from the GNSS-based water level meter, stores and analyzes the data, and transmits it to a water level meter operating server; and a water level meter operating server (500) that receives water level data and equipment status data from the remote monitoring server, detects an abnormal state, and transmits the analysis result to an administrator terminal.

[0023] Herein, the GNSS-based water level gauge is installed in reservoirs, rivers, and dams in different regions across the country and is characterized by comprising: a device body having an internal receiving space formed to provide buoyancy with respect to the water surface; a GNSS receiving module equipped in the device body and receiving three-dimensional spatial coordinate data from a satellite's GNSS (Global Navigation Satellite System); a power supply module equipped in the receiving space and supplying power to the GNSS receiving module; a water level measuring module that measures the water level where the device body is located based on the three-dimensional spatial coordinate data and generates water level data; and a wireless LAN communication module equipped in the device body that wirelessly connects to a communication network to transmit water level data.

[0024] And the remote monitoring server (300) is characterized by including a water level data collection unit (350) that collects and normalizes data received from the GNSS-based water level gauge, an equipment status collection unit (360) that monitors the status of the water level gauge power module, communication module, and GNSS receiving module, and an abnormal data transmission unit (370) that detects an abnormal state exceeding a set reference value and notifies the administrator terminal.

[0026] In addition, to achieve the above-mentioned purpose, the present invention comprises the following steps: storing installation information, equipment information, and manager information for a plurality of GNSS-based water level gauges in a plurality of regions across the country (S200); charging a battery through a solar cell module of each of the plurality of GNSS-based water level gauges (S210); receiving spatial coordinate data from a satellite through a GNSS receiving module of the plurality of GNSS-based water level gauges and generating water level data (S220); transmitting the water level data and equipment status data configured in each of the plurality of GNSS-based water level gauges to a remote monitoring server through a wireless LAN communication module (S230); and transmitting a notification to a manager's terminal and a water level gauge operation server when an abnormal condition is detected by the remote monitoring server (S240). The present invention provides a method for operating a GNSS-based water level meter operating system, characterized by including the step (S250) in which, when data collected from the remote monitoring server is transmitted to the water level meter operating server, the water level meter operating server transmits to an administrator terminal the response situation regarding changes in the water level of the water level meter installation area according to the data transmitted from the plurality of GNSS-based water level meters, and the inspection of the water level meter or the equipment configured in the water level meter where an abnormality occurred among the plurality of GNSS-based water level meters, and outputs to a server administrator PC.

[0027] Here, the remote monitoring server is characterized by determining an abnormal state of the equipment based on one or more of the voltage status of the power supply module, the signal strength of the communication module, and the data collection rate of the GNSS receiving module for the GNSS-based water level gauge.

[0028] In addition, the water level gauge operation server receives weather data from the Korea Meteorological Administration server, compares and analyzes it with water level data, determines the cause of water level anomalies, and automatically generates flood forecasts, flood information for reservoirs, dams, and rivers, and information on maintenance requirements. Effects of the invention

[0030] The GNSS-based water level gauge according to the present invention, constructed in this manner, has the following effects.

[0031] First, by measuring based on GNSS, compared to measurements by a water level gauge using a separate water level sensor, it has the effect of enabling high-precision measurements because the data measurement is not contaminated by the surrounding environment.

[0032] Second, by integrating and managing water level data from reservoirs, dams, and rivers nationwide, it is possible to monitor measurement data and equipment status in real time through remote monitoring, automatic anomaly notifications, and wireless communication networks, and automatically provide notifications to managers when an anomaly occurs, thereby enabling its use in flood warning and water resource management.

[0033] Third, while conventionally location data (water level data) was calculated at a mobile station (Rover Station), the present invention has the effect of enabling the water level gauge itself to calculate water level data by receiving RTCM (Radio Technical Commission for Maritime Service) correction data from a satellite and GGA data (e.g., GPGGA data from a GPS system) through a calculation process.

[0034] Fourth, by charging the battery using solar power generation, the water level gauge can be operated in an eco-friendly manner while supplying and charging power without a separate additional power supply, which enables energy independence and has the effect of enabling unmanned operation in the long term.

[0035] Fifth, it has the effect of enabling remote monitoring of information, including battery and water level data, stored in the water level gauge in real time via wireless communication.

[0036] Sixth, by utilizing GNSS-based water level gauges modularized into individual devices as buoys, the measurement range can be easily expanded in accordance with the expansion of the reservoir measurement area by increasing or decreasing the number of water level gauges, and accordingly, it has the effect of enabling observation of the water level distribution of the reservoir.

[0037] Seventh, the water level gauge operation server can provide predictive information necessary for water resource management policies, such as floods and droughts, by integrating and analyzing weather information and historical data, and enables more efficient response in maintenance through anomaly detection based on standard equipment information. Brief explanation of the drawing

[0039] FIG. 1 is a schematic side cross-sectional example showing a GNSS-based water level gauge used in the GNSS-based water level gauge operation system and operation method according to the present invention. FIGS. 2 and FIGS. 3 are schematic examples showing an example of the overall shape of the GNSS-based water level gauge shown in FIG. 1. FIG. 4 is a block diagram conceptually showing the electrical connection relationship of the GNSS-based water level gauge shown in FIG. 1. FIG. 5 is a schematic perspective illustration showing an example of the device structure of a photovoltaic power generation means constituting a GNSS-based water level gauge used in the present invention. FIG. 6 is a partially excerpted schematic side cross-sectional example showing the combined structure of a lower body and an upper body constituting a GNSS-based water level gauge used in the present invention. FIG. 7 is a flowchart showing the water level data collection control process of a water level measurement module constituting a GNSS-based water level gauge used in the present invention. FIG. 8 is a schematic example diagram showing an example of displaying data transmitted from a GNSS-based water level gauge used in the present invention to a remote monitoring server to a user in the form of a web page. FIG. 9 is a drawing for explaining an embodiment of a GNSS-based water level gauge operating system according to the present invention. FIG. 10 is a block diagram illustrating an example of a remote monitoring server in the GNSS-based water level gauge operating system shown in FIG. 9. FIG. 11 is a block diagram illustrating an example of a water level operating server in the GNSS-based water level operating system shown in FIG. 9. FIG. 12 is a flowchart illustrating an embodiment of a GNSS-based water level gauge operation method according to the present invention. Specific details for implementing the invention

[0040] Hereinafter, a GNSS-based water level gauge according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0042] Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be interpreted as being limited to the embodiments described in detail below. These embodiments are provided to more fully explain the present invention to those with average knowledge in the art. Accordingly, the shapes of elements in the drawings may be exaggerated to emphasize clearer explanations. It should be noted that in each drawing, identical components may be depicted with the same reference numeral. Detailed descriptions of known functions and configurations that are deemed to unnecessarily obscure the essence of the present invention are omitted.

[0043] In the description of the invention as described in the specification, terms such as "~module," "module," and "~part" expressed in the components refer to a unit that processes at least one function or operation, and may be implemented in hardware (computer hardware) or software (computer software), or a combination of hardware and software.

[0044] Furthermore, the terms used in the specification of this invention have been selected to be as widely used as possible; however, in specific cases, terms have been arbitrarily selected by the applicant. Since the meanings of such terms are described in detail in the relevant description of the invention, this invention should be understood based on the meaning of the terms rather than their mere names.

[0046] FIGS. 1 to 8 are drawings showing a GNSS-based water level gauge (1) used in the GNSS-based water level gauge operation system and operation method according to the present invention. The GNSS-based water level gauge (1) according to the present embodiment is installed mainly as a device for measuring water levels in reservoirs or rivers / streams, and in particular, it can be applied suitablely for measuring water level distribution while staying for a long period of time, with a plurality of water level gauges distributed and arranged in a large reservoir.

[0048] The GNSS-based water level gauge (1) according to this embodiment comprises: a device body (2) having an internal receiving space (A) formed therein to have buoyancy with respect to the water surface of a reservoir; a GNSS receiving module (3) provided in the device body (2) and receiving three-dimensional spatial coordinate data from a GNSS (Global Navigation Satellite System) of an artificial satellite; a power supply module (4) provided in the receiving space (A) and supplying power to the GNSS receiving module; a water level measuring module (5) that measures the water level where the device body (2) is located based on the three-dimensional spatial coordinate data and generates water level data; and a wireless LAN communication module (6) that wirelessly connects to a communication network and transmits water level data.

[0049] That is, when the device body (2) floats on the water surface of a reservoir or the like to be measured, the GNSS receiving module (3) equipped in the device body (2) receives three-dimensional spatial coordinate data for the spatial coordinates where the device body (2) is located, and the water level measuring module (5) interprets the three-dimensional spatial coordinate data (latitude, longitude, altitude) to measure the water level and generate water level data.

[0050] In addition, the water level data generated by the water level measurement module (5) is configured to connect to a communication network through the wireless LAN communication module (6) and transmit the water level data to a device among the devices connected to the communication network that requested the data.

[0052] The above three-dimensional spatial coordinate data can be understood as 'GGA data' for a three-dimensional space (latitude, longitude, altitude) in which the position of the water level gauge (1), which ultimately receives data using satellite signals from the satellite's GNSS (Global Navigation Satellite System), is defined.

[0053] The above 'GGA data' is one of the NMEA 0183 standard messages output from a GNSS receiver (receiving module), and may refer to position fixing information (GPS Fix Data) including current location, altitude, time, etc. received from a satellite where the GNSS system is operating.

[0054] The types of the above GNSS systems include the US GPS, Russia's GLONASS, the European Union's Galileo, and China's BeiDou, and the above GGA data is named differently depending on the type of GNSS system.

[0055] As an example of the above GGA data, if the US GNSS system GPS is used, it is called GPGGA data; if the Russian GNSS system GLONASS is used, it is called GLGGA data; and if the EU's Galileo is used, it is named GAGGA data.

[0056] Accordingly, GGA data from unspecified GNSS systems is sometimes referred to as 'GxGGA data'.

[0057] In the above 'GxGGA data', the prefix 'Gx' can be understood as a prefix that varies depending on the type of GNSS system.

[0058] That is, the above water level data can be understood as data measuring the water level of a liquid (e.g., a reservoir) at the installation site, in which the GNSS-based water level gauge (1) according to the present embodiment is installed floating in a reservoir or the like.

[0060] In the above, the GNSS receiving module (3) can receive RTCM (Radio Technical Commission for Maritime Service) correction data by communicating with a satellite using one or more of the frequency bands 'L1', 'L2', and 'L5'.

[0061] That is, the GNSS receiving module (3) can be implemented in a configuration capable of receiving multiple frequencies so as to receive signals of various frequency bands for each satellite, and in particular, when receiving multiple frequency signals such as L1, L2, and L5, the pool of information for RTCM correction data that can be received becomes wider, so high-precision position measurement is possible compared to receiving a single frequency signal, and by receiving RTCM correction data, it is possible to exchange correction data with a separate external reference station or connect to an RTK network.

[0063] In the above, 'RTCM' is an abbreviation for "Radio Technical Commission for Maritime Service," referring to the data format itself standardized by the international organization named the Radio Technical Commission for Maritime Service, which develops standards in the field of maritime services and precise positioning.

[0064] 'RTCM' data is a standard binary format used to exchange signal information between a device receiving GNSS and a base station / satellite, and is composed of: an 'RTCM Message Header' containing metadata information such as message type, length, and reference time; a 'GPS / GNSS Data Section' containing measurements received by the receiver in the satellite system, as well as satellite position and clock correction information; a 'Correction Data Section' containing information for correcting GNSS measurements, such as information for correcting multipath effects and information for correcting atmospheric errors; and a 'State Data Section' containing information indicating the synchronization status between the receiver and the base station and the status of the transmitted correction information in the existing RTK (Real-Time Kinematic) system.

[0065] In other words, since the 'RTCM' correction data contains data that can correct errors, it can be used in calculations to correct the accuracy of the water level measured by a water level gauge using GNSS.

[0067] Meanwhile, the RTCM correction data may be collected by the water level measurement module (5) through communication of either the GNSS receiving module (3) or the wireless LAN communication module (6).

[0069] The water level data generated by the water level measurement module (5) can be generated through a process of extracting a water level value (Water Level) by applying the correction value of the 'RTCM' correction data to the three-dimensional spatial coordinate data received from the GNSS receiving module (3).

[0071] Referring to FIGS. 1, 4, and 5, the power supply module (4) may be configured to include: a photovoltaic power generation means (41) that receives sunlight through a solar cell panel (411) to produce power; a battery module (42) that receives and stores power produced by the photovoltaic power generation means; and an overcharge prevention processing unit (43) that blocks the delivery of power produced by the photovoltaic power generation means (41) to the battery module (42) depending on whether the battery module (42) is fully charged.

[0072] That is, by converting solar energy into electrical energy to produce and supply power, the power required for controlling the water level gauge (1) according to the present embodiment is supplied. By utilizing solar energy that is supplied almost infinitely, power is produced without causing pollution, and electrical energy is stored in the battery module (42) to supply the power required for the water level gauge (1) according to the present embodiment.

[0073] Accordingly, the energy self-sufficiency of the water level gauge (1) according to this embodiment is realized, while being environmentally friendly and having low maintenance costs, allowing for economical power supply.

[0075] In the above, the photovoltaic power generation means (41) may be composed of a photovoltaic power generation device and a photovoltaic energy system comprising a plurality of 'solar cell panels' (411) structures arranged in parallel, and may also be composed of a configuration and structure selected by the user from among the previously known technologies.

[0077] Meanwhile, the solar power generation means (41) described above may be placed in the receiving space (A) of the device body (2), and with reference to FIG. 5, the solar power generation means (41) may be configured with a pyramid-shaped structure and a solar cell panel (411) placed on the upper surface of the structure.

[0079] In the above, the battery module (42) can be implemented as a module arranged in parallel, made of a lithium battery structure.

[0081] The overcharge prevention processing unit (43) described above can be implemented as a process of cutting off current to the battery module (42) by turning off a separately connected Zener diode element (reverse voltage) when the voltage of the power produced by the solar power generation means (41) and transferred to the battery module (42) reaches a predetermined level, and by turning off a transistor connected to the conducted Zener diode element.

[0083] In the above, the device body (2) may be configured to include a lower body (21) having a 'barrel shape' with an open top and a receiving space (A) formed inside, and an upper body (22) having a 'barrel shape' that is coupled to the upper part of the lower body (21) and has an open bottom and a receiving space (A) formed inside.

[0084] That is, the upper part opened in the lower body (21) and the lower part opened in the upper body (22) are joined together through separate fixing to form a receiving space (A) of the device body (2), and the components of the power supply module (4) and the water level measurement module (5) are provided in the receiving space (A).

[0085] In addition, the remaining space in the above-mentioned receiving space (A) is filled with gas (air, etc.) so that the device body (2) itself has buoyancy on the water surface of a reservoir, etc.

[0086] Accordingly, the water level gauge (1) can be implemented in the form of a buoy installed on the reservoir.

[0088] Referring to FIG. 6, the lower body (21) and the upper body (22) can be joined by being bolted together through a fixing bolt (24).

[0089] In addition, a vertically protruding fitting projection (211) may be formed on the surface of the end portion of the lower body (21) that is coupled to the upper body (22); and a fitting groove (221) that fits into the fitting projection (211) may be formed on the surface of the end portion of the upper body (22) that is coupled to the lower body (21).

[0090] At this time, the fitting groove (221) may be provided with a packing member (23) that blocks the movement of water flowing into the receiving space (A).

[0091] That is, by fitting the fitting protrusion (211) into the fitting groove, not only is the lower body (21) and the upper body (22) combined to prevent twisting along the boundary surface, but water entering through the fine gap in the boundary surface where the lower body (21) and the upper body (22) are combined is also blocked at the source through the packing member (23).

[0093] In the above, the upper body (22) may be made of a light-transmitting material through which light passes.

[0094] That is, solar energy is introduced into the receiving space (A) through the upper body (22) which is made of light-transmitting material, and sunlight is incident on the solar cell panel (411) of the solar power generation means (41) placed in the receiving space (A), which is inside the device body (2), thereby enabling stable solar power generation.

[0096] The lower part of the device body (2) may be configured to include: an anchor (25) having weight to fix the position of the device body (2) floating on the water surface; a wire member (26) having one end connected to the upper end of the anchor (25) to adjust the vertical length between the device body (2) and the anchor (25); and an anchor fixing member (27) fixed to the bottom surface of the device body (2) and connected to the other end of the wire member (26) to transfer the weight of the anchor (25) to the bottom surface of the device body (2).

[0098] In the above, the anchor fixing member (27) can be screw-assembled and fastened to the bottom surface of the lower body (21) of the device body (2) through a separate fixing screw.

[0100] In the above, the bottom portion of the lower body (21) can be implemented with a horizontally flat surface shape so that the water level gauge (1) according to the present embodiment can be loaded smoothly during transportation or distribution.

[0102] In the above, it is preferable that the wireless LAN communication module (6) be configured to have wireless communication based on one or more of the communication technologies of 'LoRa' or 'Wi-Fi'.

[0104] As mentioned above, 'LoRa' communication technology, short for "Long Range," is a low-power, long-range wireless communication technology widely used in the field of the Internet of Things (IoT). It is designed to enable sensor-based IoT devices requiring low-speed data transmission to communicate stably over wide areas.

[0105] This LoRa communication technology primarily uses unlicensed frequency bands (e.g., 868 MHz, 915 MHz, etc.) and has the advantage that battery-operated sensors or devices can operate for several years because it consumes very little power.

[0106] In addition, the physical layer of LoRa communication technology uses the Chirp Spread Spectrum (CSS) method, which ensures signal stability even over long distances.

[0107] In addition, LoRa communication technology is characterized by the fact that, compared to Wi-Fi, which is one of the commonly used wireless communication technologies, the data transmission speed is relatively low, but it provides a communication range of several km (typically 16 km, or 10 miles or more), allowing a wide area to be covered with a small number of gateways, so there is no need to install base stations densely like in cellular networks, resulting in low initial construction costs. Furthermore, it is cost-effective because it can operate for several years without battery replacement due to long battery life and significantly reduced maintenance costs resulting from low-power operation.

[0108] Thanks to these characteristics of LoRa communication technology, it can be suitablely applied to communication systems that need to intermittently exchange or control data.

[0110] As mentioned above, 'Wi-Fi' communication technology is a high-speed wireless communication method based on the IEEE 802.11 standard that enables IoT devices to directly connect to the Internet and transmit and receive data. It is a communication technology that can utilize existing wireless LAN infrastructure, allowing devices to access the Internet without a separate gateway or relay device, and offers the advantages of high data transmission speed and wide bandwidth.

[0111] Devices based on this 'Wi-Fi' communication technology generally consist of sensors, actuators, microcontrollers (MCUs), and Wi-Fi modules, and are configured to connect to a server on a communication network or a local network via a separate Wi-Fi router.

[0113] As mentioned above, the structure (topology) of the communication network can be implemented as a mesh structure, a ring structure, a star structure, etc., and it is preferable that the structure be appropriately selected by a skilled person when implementing the present invention. While there is no need to be particularly limited as long as wired / wireless internet communication, data communication, or mobile communication is possible, it is most preferable that it be implemented as wireless internet communication.

[0115] Referring to FIG. 4, the GNSS-based water level meter (1) according to the present embodiment may further include a web service providing unit (100) that generates a web page displaying one or more of the following information: water level data of the water level measuring module (5), power supply status of the power supply module (4), communication settings of the wireless LAN communication module (6), and communication settings of the GNSS receiving module.

[0116] At this time, the web service providing unit (100) above may be configured to connect to a communication network through the wireless LAN communication module (6) and transmit the web page to a manager terminal (200) equipped by a manager.

[0118] Referring to FIGS. 1, FIGS. 4, and FIGS. 8, the GNSS-based water level meter (1) according to the present embodiment can transmit water level data of the water level measurement module (5) in real time to a terminal (200) connected to a communication network or a remote monitoring server (300) connected to a communication network.

[0119] That is, the above terminal (200) is configured to transmit the current (real-time) status of the data measured by the water level gauge (1) according to the present embodiment, and the remote monitoring server (300) is configured to transmit the data for the purpose of logging the water level (e.g., the water level of a reservoir) by time period.

[0121] The above terminal (200) is provided by an administrator and may be configured as a computing device including a processor (not shown) and a memory (not shown), and having a display device (not shown) that visually outputs information to the administrator and an input device (not shown) that receives input from the administrator.

[0122] At this time, examples of the above terminal (200) may be implemented as a desktop, tablet PC, notebook, netbook, laptop, tablet computer, smartphone, etc., which can be applied to various computer environments, but are not limited thereto.

[0124] Meanwhile, referring to FIG. 8, the remote monitoring server (300) receives and stores water level data from the water level measurement module (5) in real time, and when an administrator terminal (200) connects to the remote monitoring server (300) via a communication network and requests water level data, the server may be configured to display information to the administrator in a web page structure as illustrated in FIG. 8. In addition, the remote monitoring server (300) checks the equipment status, battery status, network settings, etc., to determine whether there is an abnormality or inspection of the water level gauge (1).

[0126] Referring to FIG. 7, the control process for generating water level data of the water level measurement module (5) may be performed by: switching the 'operation mode' of the water level measurement module (5) to an "RTCM collection mode" (S110); receiving and collecting RTCM correction data from a satellite through the GNSS receiving module (3) (S120); if the correction value of the RTCM correction data is valid (S130), switching the 'operation mode' of the water level measurement module (5) to a "GGA data collection mode" (S140); receiving and collecting GGA data from a satellite through the GNSS receiving module (3) (S150); if the value of the GGA data is valid (S160), generating water level data corrected through RTCM correction data based on 3D spatial coordinate data from the GGA data (S170); transmitting the generated water level data to a remote monitoring server (300) and displaying it on a webpage (S180).

[0127] At this time, if the correction value of the RTCM correction data is not valid (S130), the step (S120) of receiving and collecting RTCM correction data from the satellite through the GNSS receiving module (3) can be performed again.

[0128] In addition, if the value of the GGA data is invalid (S160), the step (S150) of receiving and collecting GGA data from the satellite through the GNSS receiving module (3) can be performed again.

[0129] That is, when the operating mode of the above-mentioned water level measurement module (5) is switched to "RTCM collection mode," RTCM correction data is collected through communication of either the above-mentioned GNSS receiving module (3) or the above-mentioned wireless LAN communication module (6), and, considering that data transmission may be incorrect during the transmission process of communication, it is determined whether the collected RTCM correction data is a valid value (e.g., whether there is no abnormality in the data format).

[0130] When the RTCM correction data to be used as a correction value in the water level measurement module (5) is a valid value, the water level measurement module (5) switches the operation mode to "GGA data collection mode" and receives GGA data, which is three-dimensional spatial coordinate data, from the satellite through reception by the GNSS receiving module (3).

[0131] Then, after determining whether the collected GGA data is a valid value (e.g., whether there are any abnormalities in the data format), if it is a valid value, the GGA data is corrected using the RTCM correction data value to generate water level data.

[0132] Next, the generated water level data is displayed as information in the form of a web page through the web service provider (100) or transmitted to the remote monitoring server (300) by connecting to a communication network, and the process of generating water level data is repeated until the water level measurement of the water level gauge (5) according to the present embodiment is finished.

[0133] As described above, the GNSS-based water level gauge (1) according to the present embodiment is characterized by a technical configuration that implements high-precision water level data measurement by receiving RTCM correction data from a satellite and receiving and calculating GGA data (e.g., GPS GPGGA data) without a separate base station, and extracting an altitude value (water level data).

[0135] FIG. 9 is a drawing illustrating an embodiment of a GNSS-based water level gauge operating system according to the present invention.

[0136] An embodiment of the GNSS-based water level meter operating system according to the present invention is shown in FIG. 9 and consists of a first water level meter (GNSS water level meter) (1A) in a first region to a Nth water level meter (GNSS water level meter) (1N) in a different region, a plurality of first to Nth administrator terminals (200A to 200N), remote monitoring servers (300A to 300N) in the first to Nth regions, and a water level meter operating server (500), and a server administrator PC (600) and a weather agency server (700) are connected via an external linkage module.

[0137] Here, the first water level gauge (GNSS water level gauge) (1A) in the first region to the Nth water level gauge (GNSS water level gauge) (1N) in the Nth region are buoy-type GNSS water level gauges of the present invention installed on the water surface of a reservoir, dam, or river, and receive RTCM correction data and GGA data through a GNSS receiving module (3) and calculate the water level.

[0138] The calculated water level data is transmitted to a remote monitoring server (300A ~ 300N) configured to transmit via a wireless LAN communication module (6) configured in the first area first water level gauge (GNSS water level gauge) (1A) to the N area N water level gauge (GNSS water level gauge) (1N).

[0139] The first to Nth remote monitoring servers (300A to 300N) are local servers that relay and aggregate data received from the first area first water level gauge (GNSS water level gauge) (1A) to the Nth area Nth water level gauge (GNSS water level gauge) (1N). Each remote monitoring server (300A to 300N) receives and stores water level data from the water level measurement module (5) in real time, and when an administrator terminal (200A to 200N) connects to the remote monitoring server (300) via a communication network and requests water level data, the information is displayed to the administrator in a web page structure as shown in FIG. 8.

[0140] The water level gauge operation server (500) collects and analyzes water level data, weather data, and equipment status of each reservoir, dam, river, etc., and monitors the operation status, water level, and equipment malfunction logs of each water level gauge.

[0141] The server administrator PC (600) is a terminal of an administrator who manages the water level gauge operation server (500), and is capable of inputting necessary data (water level gauge equipment information, installation location information, administrator information, water level gauge equipment standard information, etc.) into the water level gauge operation server (500), or performing overall system settings, data analysis, error response, etc., and thereby is capable of processing abnormalities or emergency situations by linking with the administrator terminal (300).

[0142] The weather agency server (700) provides weather data (rainfall, temperature, atmospheric pressure, etc.) to the water level gauge operation server (500) via an external API so that it can be used for correlation analysis with water level change patterns.

[0144] FIG. 10 is a block diagram illustrating an example of a remote monitoring server in the GNSS-based water level gauge operating system shown in FIG. 9.

[0145] An embodiment of a remote monitoring server in a GNSS-based water level gauge operating system according to the present invention is composed of a communication unit (310), a water level gauge installation information storage unit (320), a water level gauge equipment information storage unit (330), an administrator information storage unit (340), a water level data collection unit (350), a water level gauge equipment data collection unit (360), an abnormal data transmission unit (370), and a control unit (380), as shown in FIG. 10.

[0146] The communication unit (310) receives water level data via LoRa or Wi-Fi communication from the first water level gauge (GNSS water level gauge) (1A) in the first area to the Nth water level gauge (GNSS water level gauge) (1N) in the Nth area.

[0147] The water level gauge installation information storage unit (320) stores the installation location (latitude, longitude, identification code) of the first water level gauge (GNSS water level gauge) (1A) in the first area to the Nth water level gauge (GNSS water level gauge) (1N) in the Nth area and transmits it to the water level gauge operation server (500).

[0148] The water level gauge equipment information storage unit (330) manages equipment identification information and status, such as the GNSS receiving module (3), power supply module (4), water level measurement module (5), and wireless LAN communication module (6), configured in each of the first area first water level gauge (GNSS water level gauge) (1A) to the N area N water level gauge (GNSS water level gauge) (1N).

[0149] The administrator information storage unit (340) is configured to store the administrator ID, contact information (smartphone number, etc.), and authority information so as to immediately notify when an abnormal situation occurs.

[0150] The water level data collection unit (350) collects and normalizes water level data received from the first water level gauge (GNSS water level gauge) (1A) in the first area to the Nth water level gauge (GNSS water level gauge) (1N) in the Nth area and stores it in time units.

[0151] The water level gauge equipment data collection unit (360) collects operational status data such as the remaining amount of the battery module (42), the voltage of the solar panel (411), and the communication signal strength.

[0152] When an abnormality is detected, such as exceeding a reference value or a delay in data collection, the abnormal data transmission unit (370) immediately notifies the relevant manager's contact information (smartphone number, etc.) stored in the manager information storage unit (340) of the abnormal situation (SMS, KakaoTalk, etc.) and automatically transmits it to the water level meter operation server (500).

[0153] The control unit (380) controls the communication unit (310), the water level gauge installation information storage unit (320), the water level gauge equipment information storage unit (330), the administrator information storage unit (340), the water level data collection unit (350), the water level gauge equipment data collection unit (360), and the abnormal data transmission unit (370) to control the entire data collection and transmission routine, and transmits a remote reboot command to the water level gauge terminal when necessary.

[0155] FIG. 11 is a block diagram illustrating an example of a water level operating server in the GNSS-based water level operating system shown in FIG. 9.

[0156] An embodiment of the water level operating server in the GNSS-based water level operating system according to the present invention is configured as shown in FIG. 11 with a communication unit (501), a water level installation / equipment information storage unit (502), an administrator information storage unit (503), a water level equipment standard information storage unit (504), a water level data reception and classification unit (505), a water level equipment status data collection unit (506), an equipment abnormality data detection and transmission unit (507), a weather information collection unit (508), a water level information / weather information comparison unit (509), a water level data storage unit for each water level (510), a water level data comparison unit for each water level (511), and a control unit (512).

[0157] The communication unit (501) receives and transmits data from the remote monitoring server (300). It maintains stable communication based on data synchronization and security protocols (TLS, MQTT-SN).

[0158] The water level gauge installation / equipment information storage unit (502) manages the location, module configuration, and operation records of the first water level gauge (GNSS water level gauge) (1A) in the first region to the Nth water level gauge (GNSS water level gauge) (1N) in the Nth region installed in each reservoir nationwide.

[0159] The administrator information storage unit (503) manages the administrator user account and access logs of the administrator managing the first water level gauge (GNSS water level gauge) (1A) to the Nth water level gauge (GNSS water level gauge) (1N) in the first area, thereby controlling monitoring by operational authority.

[0160] The water level gauge equipment standard information storage unit (504) stores the manufacturing specifications and standard normal values ​​(e.g., voltage range, communication response time) for each of the first water level gauge (GNSS water level gauge) (1A) in the first region to the Nth water level gauge (GNSS water level gauge) (1N) in the N region.

[0161] The water level data receiving and classification unit (505) classifies water level data by time, location, and weather conditions for the first water level gauge (GNSS water level gauge) (1A) in the first region to the Nth water level gauge (GNSS water level gauge) (1N) in the Nth region, filters it, and stores it.

[0162] The water level gauge equipment data collection unit (506) periodically collects status information of the power supply module, GNSS receiving module, and communication module constituting the first water level gauge (GNSS water level gauge) (1A) in the first area to the Nth water level gauge (GNSS water level gauge) (1N) in the Nth area.

[0163] The equipment abnormality data detection and transmission unit (507) transmits the data to the server administrator PC and the respective manager terminal when equipment abnormality data is detected for each of the first water level gauge (GNSS water level gauge) (1A) in the first area to the Nth water level gauge (GNSS water level gauge) (1N) in the Nth area, which is collected by the water level gauge equipment data collection unit (506). This equipment abnormality data can be detected by comparing it with the respective manufacturing specifications and standard normal values ​​(e.g., voltage range, communication response time) for each of the equipment stored in the water level gauge equipment standard information storage unit (504). When the data deviates from the preset setting criteria, an alarm is generated and a notification is transmitted to the server administrator PC and the mobile terminal.

[0164] The weather information collection unit (508) receives and stores temperature, rainfall, and wind speed data from an external weather agency server (700).

[0165] The water level information / weather information comparison unit (509) can be used to analyze the correlation between rainfall data fluctuations and water level rise, and to use for flood prediction modeling and to check for weather information errors and equipment errors.

[0166] The water level data storage unit (510) for each water level gauge stores time-sequence data for the first water level gauge (GNSS water level gauge) (1A) in the first region to the Nth water level gauge (GNSS water level gauge) (1N) in the Nth region.

[0167] The water level data comparison unit (511) for each water level gauge is used to determine measurement abnormalities or sensor errors by comparing and analyzing the deviation of measurement values ​​between adjacent water level gauges for the first water level gauge (GNSS water level gauge) (1A) in the first area to the Nth water level gauge (GNSS water level gauge) (1N) in the Nth area.

[0168] The control unit (512) controls the communication unit (501), the water level gauge installation / equipment information storage unit (502), the administrator information storage unit (503), the water level gauge equipment standard information storage unit (504), the water level data reception and classification unit (505), the water level gauge equipment status data collection unit (506), the equipment abnormality data detection and transmission unit (507), the weather information collection unit (508), the water level information / weather information comparison unit (509), the water level data storage unit (510) for each water level gauge, and the water level data comparison unit (511) for each water level gauge, and comprehensively controls the overall system operation schedule management, data update, log management, API provision, etc.

[0170] FIG. 12 is a flowchart illustrating an embodiment of a GNSS-based water level gauge operation method according to the present invention.

[0171] An embodiment of the GNSS-based water level gauge operation method according to the present invention stores installation information, equipment information, and manager information for the GNSS-based water level gauge as shown in FIG. 12 (S200). At this time, the identification information (unique ID), location information (latitude and longitude), equipment components (power module, communication module, etc.), and contact information of the manager are established. This data is used as reference information for system maintenance and remote management in the future. This can be stored through a server manager PC (600).

[0172] And the GNSS-based water level gauge converts solar energy into electrical energy through a solar cell module and charges it into a battery module to supply power to each component module within the device (S210). At this time, it is configured to enable stable self-charging over a long period by including an overcharge protection circuit.

[0173] A GNSS receiving module receives spatial coordinate data (latitude, longitude, altitude) from a satellite and generates error-corrected water level data by applying RTCM correction data (S220). At this time, a water level measuring module calculates the change in water level of a reservoir based on this data and stores it in internal memory.

[0174] The GNSS-based water level gauge transmits water level data and equipment status data to a local remote monitoring server via a wireless LAN communication module (LoRa, Wi-Fi, etc.) (S230). At this time, the transmitted data includes information such as water level value, power status, communication status, and GPS signal strength.

[0175] The remote monitoring server in each region detects equipment abnormality signals among the received data and notifies the manager of the abnormal situation via SMS, KakaoTalk, or push notification to the manager's terminal (smartphone, PC, etc.). At the same time, the abnormal information is transmitted to the water level gauge operation server (S240).

[0176] In addition, the local remote monitoring server transmits the collected data to the water level operating server, and the monitoring server transmits the water level data, battery status, and network configuration data (S250).

[0177] The water level gauge operation server determines abnormal conditions by comparing and analyzing the reference values ​​of the collected data, and notifies the administrator PC and terminal when an emergency situation occurs due to a change in the water level (S260). In other words, it enables rapid response to, for example, floods in rivers, dams, or reservoirs.

[0178] Meanwhile, the water level gauge operation server comprehensively analyzes abnormal signals such as equipment, network, and battery status, and analyzes the cause of water level changes by comparing them with weather information (rainfall, atmospheric pressure, wind speed, etc.) collected from the weather agency server, and the analysis results are used as feedback data for system maintenance and prediction modeling (S270).

[0180] The embodiment of the present invention described above is merely illustrative, and those skilled in the art will readily understand that various modifications and equivalent alternative embodiments are possible therefrom. Therefore, it will be understood that the present invention is not limited only to the forms mentioned in the above detailed description. Accordingly, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims. Furthermore, the present invention should be understood to include all modifications, equivalents, and substitutions within the spirit and scope of the present invention as defined by the appended claims. Explanation of the symbols

[0182] 1, 1A, 1B, 1C, 1D, 1E, 1N: Water level gauge 100 : Web Service Provider 200, 200A, 200B, 200N: Administrator terminal 300, 300A, 300B, 300N: Remote monitoring servers 310 : Communication unit 320 : Water level gauge installation information storage unit 330: Level gauge equipment information storage unit 340: Administrator information storage unit 350: Water level data collection unit 360: Water level gauge equipment data collection unit 370: Ideal data transmission unit 380: Control unit 2 : Device main body 21 : Lower body 211 : Insertion projection 22 : Upper body 221 : Insertion groove 23 : Packing member 24 : Fixing bolt 25 : Anchor 26 : Wire member 27 : Anchor fixing member 3: GNSS receiver module 4: Power supply module 41 : Solar power generation means 411 : Solar cell panel 42 : Battery module 43 : Overcharge protection unit 5 : Water level measurement module 6 : Wireless LAN communication module A : Accommodation space 500: Level gauge operation server 501: Communications unit 502 : Level gauge installation / equipment information storage 503: Administrator Information Storage Unit 504: Level Gauge Equipment Standard Information Storage Unit 505: Water level data reception and classification unit 506: Water level gauge equipment status data collection unit 507: Equipment Anomaly Data Detection and Transmission Unit 508 : Weather Information Collection Unit 509 : Water Level Information / Weather Information Comparison Unit 510: Water level data storage unit by level gauge 511: Water level data comparison unit by level gauge 512 : Control unit 600: Server Administrator PC 700: Korea Meteorological Administration Server

Claims

Claim 1 In a GNSS (Global Navigation Satellite System)-based water level gauge operation system, a GNSS-based water level gauge installed on the surface of a reservoir that generates water level data by receiving RTCM correction data from an artificial satellite without a separate base station; and a remote monitoring server (300) that wirelessly receives water level data and equipment status data from the GNSS-based water level gauge, stores and analyzes the data, and transmits it to a water level gauge operation server. and a water level gauge operating server (500) that receives water level data and equipment status data from the remote monitoring server, detects an abnormal state, and transmits the analysis result to an administrator terminal; wherein the GNSS-based water level gauge is installed in reservoirs, rivers, and dams in different regions across the country and comprises a device body (2) having an internal receiving space formed to provide buoyancy on the water surface, a GNSS receiving module (3) provided in the device body (2) and receiving 3D spatial coordinate data from a GNSS (Global Navigation Satellite System) of an artificial satellite, a power supply module (4) provided in the receiving space and supplying power to the GNSS receiving module (3), a water level measuring module (5) that measures the water level where the device body is located based on the 3D spatial coordinate data and generates water level data, and a wireless LAN communication module (6) provided in the device body (2) and wirelessly connects to a communication network to transmit water level data, and the remote monitoring server (300) comprises the GNSS A communication unit (310) that receives water level data from a base water level gauge, a water level gauge installation information storage unit (320) that stores the installation location (latitude, longitude, identification code) of the GNSS-based water level gauge, a water level gauge equipment information storage unit (330) that manages equipment identification information and status of the GNSS receiving module (3), power supply module (4), water level measurement module (5), and wireless LAN communication module (6) configured in each GNSS-based water level gauge, and a manager ID, contact information,The water level operating server (500) is composed of an administrator information storage unit (340) configured to hold authorization information and immediately notify when an abnormal situation occurs, a water level data collection unit (350) that performs collection and normalization of data received from the GNSS-based water level gauge, a water level gauge equipment data collection unit (360) that monitors the status of the water level gauge power module, communication module, and GNSS receiving module, an abnormal data transmission unit (370) that detects an abnormal state exceeding a set reference value and notifies the administrator terminal, and a control unit (380) that controls the communication unit (310), water level gauge installation information storage unit (320), water level gauge equipment information storage unit (330), administrator information storage unit (340), water level data collection unit (350), water level gauge equipment data collection unit (360), and abnormal data transmission unit (370) to control the entire data collection and transmission routine. The water level operating server (500) comprises a communication unit (501) that receives and transmits data from the remote monitoring server (300), and the A water level gauge installation / equipment information storage unit (502) for integrated management of the location, module configuration, and operation records of the GNSS-based water level gauge; an administrator information storage unit (503) for managing the administrator's management user account and access logs to control monitoring by operation authority; a water level gauge equipment standard information storage unit (504) for storing the manufacturing specifications and standard normal values ​​for each piece of equipment of the GNSS-based water level gauge; a water level data reception and classification unit (505) for classifying, filtering, and storing water level data according to the time, location, and weather conditions of the GNSS-based water level gauge; a water level gauge equipment data collection unit (506) for periodically collecting status information of the power supply module, GNSS reception module, and communication module constituting the GNSS-based water level gauge; an equipment abnormality data detection and transmission unit (507) for transmitting the data to a server administrator PC and each responsible administrator terminal when equipment abnormality data of the GNSS-based water level gauge collected by the water level gauge equipment data collection unit (506) is detected; and the Korea Meteorological Administration Temperature, rainfall, from the server (700),A GNSS-based water level meter operating system characterized by comprising: a weather information collection unit (508) that receives and stores wind speed data; a water level data storage unit (510) for each water level meter that stores chronological data of the GNSS-based water level meter; a water level data comparison unit (511) for each water level meter that is used to determine measurement abnormalities or sensor errors by comparing and analyzing the deviation of measurement values ​​between adjacent water level meters for the GNSS-based water level meter; and a control unit (512) that controls the communication unit (501), the water level meter installation / equipment information storage unit (502), the administrator information storage unit (503), the water level meter equipment standard information storage unit (504), the water level data reception and classification unit (505), the water level meter equipment status data collection unit (506), the equipment abnormality data detection and transmission unit (507), the weather information collection unit (508), the water level data storage unit (510), and the water level data comparison unit (511). Claim 2 A GNSS-based water level meter operating system according to claim 1, wherein the GNSS-based water level meter is composed of a plurality of first-region first-water level meters (1A) to N-region N-water level meters (1N). Claim 3 delete Claim 4 A GNSS-based water level gauge comprising: a device body (2) having an internal receiving space (A) formed to provide buoyancy with respect to the water surface of a reservoir; a GNSS receiving module (3) provided in the device body (2) and receiving three-dimensional spatial coordinate data from a GNSS (Global Navigation Satellite System) of an artificial satellite; a power supply module (4) provided in the receiving space (A) and supplying power to the GNSS receiving module; a water level measurement module (5) that measures the water level where the device body (2) is located based on the three-dimensional spatial coordinate data and generates water level data; and a wireless LAN communication module (6) that wirelessly connects to a communication network and transmits water level data; a remote monitoring server (300) that wirelessly receives water level data and equipment status data from the GNSS-based water level gauge, stores and analyzes the data, and transmits it to a water level gauge operation server; and a water level gauge operation server (500) that receives water level data and equipment status data from the remote monitoring server and detects an abnormal state. In a method of operating a water level gauge operating system, the method comprises: a step (S200) in which installation information, equipment information, and manager information of multiple GNSS-based water level gauges are stored in multiple regions across the country; a step (S210) in which a battery is charged through a solar cell module of each of the multiple GNSS-based water level gauges; a step (S220) in which spatial coordinate data is received from a satellite through a GNSS receiving module by the multiple GNSS-based water level gauges and water level data is generated; a step (S230) in which the water level data and equipment status data configured in each of the multiple GNSS-based water level gauges are transmitted to a remote monitoring server through a wireless LAN communication module by the multiple GNSS-based water level gauges; a step (S240) in which an alert is transmitted to a manager's terminal and a water level gauge operating server when an abnormal condition is detected by the remote monitoring server; and a step (S250) in which data collected from the remote monitoring server is transmitted to the water level gauge operating server.The above-mentioned water level gauge operating server transmits to an administrator terminal a response situation regarding changes in the water level of the water level gauge installation area and an inspection of a water level gauge or equipment configured in the water level gauge among the multiple GNSS-based water level gauges that has malfunctioned, according to data transmitted from multiple GNSS-based water level gauges, and outputs to a server administrator PC (S260); wherein the above-mentioned remote monitoring server comprises a communication unit (310) that receives water level data via LoRa or Wi-Fi communication from a first-area first-water level gauge (1A) to a N-area N-water level gauge (1N) configured as GNSS-based water level gauges, a water level gauge installation information storage unit (320) in which the installation location (latitude, longitude, identification code) of the first-area first-water level gauge (1A) to the N-area N-water level gauge (1N) is stored, and a GNSS receiving module (3) configured in each of the first-area first-water level gauge (1A) to the N-area N-water level gauge (1N). A water level meter equipment information storage unit (330) that manages equipment identification information and status of a power supply module (4), a water level measurement module (5), and a wireless LAN communication module (6); a manager information storage unit (340) configured to store a manager ID, contact information, and authority information to notify when an abnormal situation occurs; a water level data collection unit (350) that collects and normalizes water level data received from the first water level meter (1A) in the first area to the Nth water level meter (1N) in the Nth area; a water level meter equipment data collection unit (360) that collects the remaining amount of the battery module (42), the voltage of the solar panel (411), and the communication signal strength; an abnormal data transmission unit (370) that notifies the manager contact information stored in the manager information storage unit (340) of the abnormal situation and transmits it to the water level meter operation server (500) when a reference value is exceeded or an abnormality in data collection delay is detected; and the communication unit (310), the water level meter installation information storage unit (320), and the water level meter equipment information Storage unit (330), manager information storage unit (340), water level data collection unit (350), water level gauge equipment data collection unit (360),A method of operating a GNSS-based water level gauge operating system, comprising a control unit (380) that controls an abnormal data transmission unit (370) to control an overall data collection and transmission routine, and determining an abnormal state of equipment based on one or more of the voltage state of a power supply module, the signal strength of a communication module, and the data collection rate of the GNSS receiving module (3) for the first water level gauge (1A) in the first region to the Nth water level gauge (1N) in the Nth region, and wherein the water level gauge operating server receives weather data from a weather agency server, compares and analyzes it with water level data of a plurality of the GNSS-based water level gauges, determines the cause of the abnormal water level, and generates flood forecasts and flood information for reservoirs, dams, and rivers. Claim 5 delete Claim 6 delete

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