Offshore temporary water level sea-air three-dimensional monitoring device based on floating ball carrier

Abstract

The utility model relates to a kind of offshore temporary water level sea-air three-dimensional monitoring device based on floating ball carrier, the device with aluminium alloy floating ball as carrier, integration tianbao RTX GNSS height measuring device, three-axis universal joint support, water bottom liquid level sensor, tiantong satellite communication module, solar lithium battery power supply system and control system.Its advantages are shown in: the device is through universal joint correction antenna posture, multi-source data cross validation improves precision;Rely on satellite communication covers far sea blind area, solar power supply realizes long-term independent operation;Without differential service reduces cost, can effectively solve the defects of prior art, realize high-precision, low-cost, wide coverage offshore water level monitoring, provide reliable data support for marine disaster warning, offshore operation safety etc..

Description

Technical Field

[0001] This utility model belongs to the field of marine monitoring, specifically relating to a nearshore temporary water level three-dimensional monitoring device based on a buoy carrier. Background Technology

[0002] Nearshore environmental monitoring is an important foundation for marine scientific research and water resource management, and is of great significance for coastal economic development, marine disaster prevention and control, and maritime operation safety. As one of the key indicators of nearshore environmental monitoring, water level monitoring provides the absolute elevation of sea level relative to a certain datum, which is an important basis for water resource allocation and marine disaster early warning.

[0003] Existing nearshore water level monitoring technologies have the following significant drawbacks, making them difficult to meet practical application requirements:

[0004] 1. Limitations of traditional water level monitoring: Due to the large distance between traditional fixed water level stations (usually several kilometers to tens of kilometers), it is impossible to achieve continuous spatial monitoring of dynamic changes in sea level, resulting in data that is difficult to fully reflect the fine distribution and real-time fluctuations of water level in nearshore areas.

[0005] 2. Shortcomings of satellite radar altimeters: Satellite radar altimeters have low resolution (about 1km) and measurement accuracy (centimeter to decimeter level), and are limited by orbital coverage, making them unable to meet temporary monitoring needs at arbitrary locations (such as typhoon warning areas and near-shore engineering areas), and their deployment flexibility is poor.

[0006] 3. Bottlenecks in GNSS-based monitoring technology:

[0007] Existing GNSS-based water level monitoring methods have three major drawbacks:

[0008] 1) Antenna attitude interference accuracy: GNSS antennas are susceptible to tilting due to ocean currents and waves. Existing technologies cannot effectively correct attitude deviations, resulting in a decrease in altitude measurement accuracy.

[0009] 2) High cost and bandwidth: The buoy GNSS observations need to be transmitted back to the data center for processing, or additional real-time precision differential services are required, which greatly increases communication costs and reduces the cost-effectiveness of real-time applications.

[0010] 3) Insufficient real-time accuracy: The large demand for communication bandwidth (requiring the transmission of massive amounts of raw data) makes it difficult for real-time satellite altimetry accuracy to meet centimeter-level requirements.

[0011] 4. Buoy stability and adaptability issues: Existing buoy designs struggle to maintain structural stability in complex marine environments (such as strong winds, waves, and rapid currents), making them prone to capsizing or attitude shifts, thus affecting the reliability of monitoring data.

[0012] 5. Data transmission coverage blind spots: Existing technologies do not fully consider scenarios where there are no 4G / 5G signals in uninhabited areas (such as the open sea and remote waters). The transmission method that relies on mobile communication is prone to interruption and cannot guarantee data continuity.

[0013] Therefore, in summary, there is an urgent need for a high-precision, low-cost, interference-resistant, and wide-coverage nearshore water level sea-air integrated monitoring device to achieve real-time positioning without relying on base stations, stable operation in complex environments, and continuous data transmission. Utility Model Content

[0014] The purpose of this invention is to solve the above-mentioned problems in the prior art and provide a nearshore temporary water level three-dimensional monitoring device based on a buoy carrier.

[0015] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0016] A nearshore temporary water level three-dimensional monitoring device based on a buoy carrier, characterized by comprising: a buoy carrier with an internal cavity and an external anti-collision device; a Trimble RTX GNSS altimeter installed in the cavity of the buoy carrier, including a GNSS receiver and a gyroscope; a gimbal bracket installed on the top of the buoy carrier, one end fixedly connected to the GNSS antenna and the other end mechanically connected to the gyroscope; a liquid level sensor installed on a fixed base with an anti-sinking plate on the seabed, connected to the cavity of the buoy carrier via a cable; a Tiantong satellite communication module installed in the cavity of the buoy carrier, including a satellite host and a satellite antenna, the satellite antenna being equipped with a protective device; a solar panel installed on the top of the buoy carrier; a lithium battery installed in the cavity of the buoy carrier; and a control system installed in the cavity of the buoy carrier, including a main controller and a data processing unit, the control system being electrically connected to the Trimble RTX GNSS altimeter, the liquid level sensor, the Tiantong satellite communication module, the solar panel, and the lithium battery.

[0017] Preferably, the float carrier is made of aluminum alloy, and the anti-collision device is made of rubber.

[0018] Preferably, the universal joint bracket is a three-axis structure, possessing rotational degrees of freedom in the X, Y, and Z directions.

[0019] Preferably, the fixed base of the liquid level sensor is provided with a counterweight structure, and the fixed base is isolated from the float carrier by a non-rigid connection structure.

[0020] Preferably, the satellite antenna of the Tiantong satellite communication module is an omnidirectional wide-beam antenna.

[0021] Preferably, the main controller uses a quad-core 64-bit ARM architecture CPU.

[0022] Preferably, the data processing unit integrates a data storage module and an anomaly alarm module.

[0023] Due to the adoption of the above technical solution, the beneficial effects obtained by this utility model include:

[0024] 1. This utility model uses a three-axis universal joint bracket combined with a gyroscope to correct the attitude of the GNSS antenna in real time, effectively counteracting the interference of wind and waves. At the same time, it uses data collected by an underwater liquid level sensor and cross-validation with GNSS altimetry data to significantly enhance the accuracy and reliability of water level measurement in complex marine environments. This design solves the problem of attitude interference accuracy in existing GNSS monitoring. Through the complementarity of multi-source data, it ensures the accuracy of measurement results and provides reliable support for refined water level monitoring.

[0025] 2. This utility model does not rely on ground differential services or full data transmission, significantly reducing communication costs; the lightweight aluminum alloy float carrier can be flexibly deployed in any temporary area (such as typhoon warning areas or nearshore engineering areas), making up for the spatial discontinuity of traditional fixed water level stations; relying on the Tiantong satellite communication module, the device covers signal blind spots in the open sea / uninhabited areas, transmits data stably through low-bandwidth channels, and supports local storage, breakpoint resume, and data encryption to ensure data security and prevent data loss, solving the problems of transmission blind spots and data interruption in the prior art;

[0026] 3. The lightweight buoy and anti-collision structure of this utility model can adapt to harsh marine environments, and solar energy and lithium batteries can support long-term automatic monitoring; data encryption, local storage and breakpoint resume mechanism prevent data loss and meet the stability requirements of temporary monitoring. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of an embodiment of the nearshore temporary water level three-dimensional monitoring device based on a buoy carrier.

[0028] Figure 2 This is a structural flowchart of an embodiment of the nearshore temporary water level three-dimensional monitoring device based on a buoy carrier.

[0029] Figure 3 This is an implementation diagram of an embodiment of the nearshore temporary water level three-dimensional monitoring device based on a buoy carrier.

[0030] The attached figures are labeled as follows:

[0031] 1. Float carrier; 11. Cavity; 12. Rubber anti-collision device;

[0032] 2. Trimble RTX GNSS altimeter:

[0033] 21. Trimble RTX GNSS Receiver; 22. Three-axis MEMS Gyroscope;

[0034] 221. RTX satellite; 222. Navigation satellite; 223. Positioning satellite; 224. Tiantong satellite;

[0035] 3. Universal joint bracket; 31. GNSS antenna;

[0036] 4. Liquid level sensor; 41. Mounting base; 42. Cable; 43. Counterweight structure;

[0037] 44. Sinking block; 45. Anchor chain;

[0038] 5. Tiantong satellite communication module; 51. Tiantong-1 satellite main unit;

[0039] 52. Omnidirectional wide-beam antenna; 53. Ground base station;

[0040] 6. Solar panels;

[0041] 7. Control system; 71. Main controller; 72. Data processing unit;

[0042] 73. Data storage module; 74. Anomaly alarm module;

[0043] 8. Lithium battery. Detailed Implementation

[0044] like Figure 1-3 As shown, this utility model aims to provide a nearshore temporary air-sea integrated water level monitoring device based on a buoy carrier. It utilizes a lightweight buoy to carry a Trimble RTX GNSS altimeter (combined with a gimbal bracket and gyroscope for attitude correction), a Tiantong satellite communication module (for stable low-bandwidth transmission), a liquid level sensor (complementing GNSS data), and a solar power supply system. This addresses the problems of poor stability, high cost, and transmission blind spots in existing technologies, achieving continuous, real-time, high-precision, and low-cost nearshore water level monitoring. This provides reliable data support for water resource management, marine disaster early warning, and maritime operation safety. Based on this, the core components of the monitoring device include: a buoy carrier, a Trimble RTX GNSS altimeter, a gimbal bracket, a liquid level sensor, a Tiantong satellite communication module, a power supply system, and a control system. The structure and function of each component are as follows:

[0045] Float carrier 1: Made of lightweight aluminum alloy (or similar material), combining strength and buoyancy; it has an internal cavity 11 for installing electronic components; it is wrapped with a rubber anti-collision device 12 to resist the impact of wind and waves; the float carrier 1 is used to carry all monitoring modules and keep them floating stably on the water surface.

[0046] Trimble RTX GNSS altimeter 2: Installed within the cavity 11 of the float carrier 1, it includes a Trimble RTX GNSS receiver 21 and a three-axis MEMS gyroscope 22. The Trimble RTX GNSS receiver 21 is used to receive satellite signals (RTX satellite 221, navigation satellite 222, positioning satellite 223, Tiantong satellite 224, etc.) and directly outputs high-precision absolute elevation (without differential service). The three-axis MEMS gyroscope 22 is used to detect the float tilt angle in real time and drive the gimbal bracket 3 to adjust the GNSS antenna attitude to near horizontal to counteract wind and wave interference.

[0047] The gimbal bracket 3 is a three-axis structure with rotational degrees of freedom in the X, Y, and Z directions. It is installed on the top of the float carrier 1, with one end fixedly connected to the GNSS antenna 31 and the other end mechanically connected to the three-axis MEMS gyroscope 22. The gimbal bracket can automatically calibrate the attitude of the GNSS antenna based on the feedback from the gyroscope to ensure the accuracy of altitude measurement.

[0048] In this embodiment, the gimbal bracket 3 and the Trimble RTX GNSS altimeter 2 are directly mechanically connected via a gyroscope 22. Specifically, one end of the gimbal bracket 3 (the lower end near the top of the float carrier) is mechanically connected to the three-axis MEMS gyroscope 22 in the Trimble RTX GNSS altimeter 22; the other end (the top end) of the gimbal bracket 3 is fixedly connected to the GNSS antenna 31. The connection between the two is to achieve attitude correction and ensure the accuracy of the altimeter measurement. The three-axis MEMS gyroscope 22 (belonging to the Trimble RTX GNSS altimeter 22) detects the tilt angle of the float caused by wind and waves in real time. The gyroscope feeds back the tilt data to the gimbal bracket, driving it to adjust the attitude of the GNSS antenna to a near-horizontal state through rotation in three directions. Ultimately, this ensures that the GNSS antenna 31 always maintains the optimal receiving angle, cancels wind and wave interference, and improves the accuracy of water level measurement.

[0049] Liquid level sensor 4: Installed on a fixed base 41 with an anti-sinking plate on the seabed, it communicates with the cavity of the buoy carrier 1 via a cable 42; the fixed base 41 is equipped with a counterweight structure 43 (to resist water flow / wave displacement), and the fixed base 41 and the buoy carrier 1 are isolated by a non-rigid connection structure (such as a buffer) to prevent the buoy from overturning due to hydrodynamic tension. To further increase the stability of the buoy, a sinker 44 can be set on the seabed and connected to the buoy by an anchor chain 45; the liquid level sensor 4 is used to collect underwater liquid level data, which complements GNSS altimetry data and improves measurement accuracy.

[0050] The Tiantong satellite communication module 5 is installed inside the cavity of the float carrier 1 and includes the Tiantong-1 satellite host 51 and an omnidirectional wide-beam antenna 52. The omnidirectional wide-beam antenna 52 is equipped with a protective device. This Tiantong satellite communication module can cover China and its surrounding areas, as well as Southeast Asian waters, solving the signal blind spots in remote seas / uninhabited areas. It transmits data through a low-bandwidth channel of 1.2 to 9.6 Kbps without relying on a ground base station 53. It also supports real-time transmission, local storage, breakpoint resume, and data encryption to ensure data security and prevent data loss.

[0051] Solar panel 6: installed on top of the float carrier; lithium battery 8 is installed inside the cavity of the float carrier; specifically, solar energy is converted into electrical energy, and the lithium battery is stored for backup, enabling long-term automatic monitoring (without manual charging).

[0052] Control system 7: Installed inside the cavity of the float carrier 1, it includes a main controller 71 and a data processing unit 72. The control system 7 is electrically connected to the Trimble RTX GNSS altimeter 2, the liquid level sensor 4, the Tiantong satellite communication module 5, the solar panel 6, and the lithium battery 8. The main controller 71 uses a quad-core 64-bit ARM architecture CPU and is mainly used to clean / compress raw data, interface with the satellite communication interface, and optimize transmission efficiency. The data processing unit 72 integrates a data storage module 73 and an anomaly alarm module 74 for storing data and alarming anomalies (such as sudden changes in water level or equipment failure).

[0053] The working principle of this utility model is as follows:

[0054] 1. Carrier stabilization and attitude correction

[0055] The buoy carrier (made of aluminum alloy and rubber anti-collision) floats on the near-shore water surface, carrying all monitoring modules through an internal cavity; the three-axis MEMS gyroscope in the Trimble RTX GNSS altimeter detects the tilt angle of the buoy caused by wind and waves in real time, and drives the three-axis gimbal bracket to adjust the attitude of the GNSS antenna to a near-horizontal state, canceling attitude interference and ensuring the accuracy of GNSS signal reception.

[0056] 2. High-precision water level data acquisition

[0057] GNSS altimetry: Trimble RTX GNSS receivers directly receive satellite signals and output centimeter-level high-precision absolute elevation (no ground differential service required);

[0058] Complementary liquid level: The liquid level sensor (with counterweight and non-rigid buffer connection) on the fixed base at the bottom of the water collects the liquid level data at the bottom of the water and cross-validates it with GNSS elevation data to improve the reliability of the measurement.

[0059] 3. Data Transmission and Processing

[0060] Communication coverage: The Tiantong satellite communication module (omnidirectional wide beam antenna) transmits data through a low-bandwidth channel (1.2~9.6Kbps), covering signal blind spots in the open sea / uninhabited areas, and supports local storage, breakpoint resume and data encryption;

[0061] Intelligent control: The control system (4-core ARM CPU main controller and data processing unit) cleans / compresses raw data and optimizes transmission efficiency; the data processing unit integrates a storage module (for retaining data) and an anomaly alarm module (for sudden water level changes / equipment failure warnings).

[0062] 4. Long-term independent power supply

[0063] The solar panel on top of the buoy converts light energy into electrical energy, while the lithium battery inside the cavity stores it for backup, enabling long-term automatic monitoring without human intervention.

[0064] It should be noted that:

[0065] This device uses a three-axis gimbal bracket combined with a gyroscope to correct the GNSS antenna attitude in real time, effectively counteracting wind and wave tilt interference. Simultaneously, it cross-validates data collected by an underwater liquid level sensor with GNSS altimeter data, significantly enhancing the accuracy and reliability of water level measurements in complex marine environments. This design solves the accuracy problem caused by attitude interference in existing GNSS monitoring, ensuring the accuracy of measurement results through multi-source data complementarity, and providing reliable support for refined water level monitoring.

[0066] In addition, the device does not rely on ground differential services or full transmission of raw data, significantly reducing communication costs; the lightweight aluminum alloy buoy carrier can be flexibly deployed in any temporary area (such as typhoon warning areas or nearshore engineering areas), making up for the spatial discontinuity of traditional fixed water level stations; relying on the Tiantong satellite communication module, the device covers signal blind spots in the open sea / uninhabited areas, transmits data stably through low-bandwidth channels, and supports local storage, breakpoint resume, and data encryption to ensure data security and prevent data loss, solving the problems of transmission blind spots and data interruption in existing technologies;

[0067] The combination of solar panels and lithium batteries enables long-term automatic monitoring without human intervention; the float is wrapped with a rubber anti-collision device to resist the impact of wind and waves and enhance stability in harsh environments; this design meets the continuous operation requirements of temporary monitoring, can work for a long time without human intervention, and provides continuous and reliable data support for water resource management, marine disaster early warning and safety of offshore operations.

[0068] Overall, this device ensures high GNSS accuracy through attitude correction, enhances reliability through complementary liquid level data, solves transmission blind spots through Tiantong satellite, and supports continuous operation through solar power. Ultimately, it achieves continuous, real-time, high-precision, and low-cost near-shore water level monitoring, providing data support for marine disaster early warning and water resource management. It effectively makes up for the shortcomings of existing technologies and has significant practical application value.

[0069] The foregoing descriptions and embodiments are provided to enable those skilled in the art to understand and apply this invention. Those skilled in the art will readily make various modifications to these contents and apply the general principles described herein to other embodiments without inventive effort. Therefore, this invention is not limited to the foregoing descriptions and embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of this invention without departing from its scope should be within the protection scope of this invention.

Claims

1. A nearshore temporary water level three-dimensional monitoring device based on a buoy carrier, characterized in that, include: Float carrier: It has an internal cavity and an external anti-collision device; Trimble RTX GNSS altimeter: installed inside the cavity of the float carrier, containing a GNSS receiver and a gyroscope; Universal joint bracket: installed on the top of the float carrier, one end is fixedly connected to the GNSS antenna, and the other end is mechanically connected to the gyroscope; Liquid level sensor: installed on a fixed base with anti-sinking plate on the bottom of the water, and connected to the cavity of the float carrier by a cable; Tiantong satellite communication module: installed in the cavity of the float carrier, including satellite host and satellite antenna, the satellite antenna is equipped with a protective device; Solar panels: installed on top of the float carrier; Lithium battery: installed inside the cavity of the float carrier; Control system: Installed in the cavity of the float carrier, it includes a main controller and a data processing unit. The control system is electrically connected to the Trimble RTX GNSS altimeter, liquid level sensor, Tiantong satellite communication module, solar panel and lithium battery respectively.

2. The apparatus according to claim 1, characterized in that, The float carrier is made of aluminum alloy, and the anti-collision device is made of rubber.

3. The apparatus according to claim 1, characterized in that, The universal joint bracket has a three-axis structure, with rotational degrees of freedom in the X, Y, and Z axes.

4. The apparatus according to claim 1, characterized in that, The fixed base of the liquid level sensor is equipped with a counterweight structure, and the fixed base is isolated from the float carrier by a non-rigid connection structure.

5. The apparatus according to claim 1, characterized in that, The satellite antenna of the Tiantong satellite communication module is an omnidirectional wide-beam antenna.

6. The apparatus according to claim 1, characterized in that, The main controller uses a 4-core 64-bit ARM architecture CPU.

7. The apparatus according to claim 1, characterized in that, The data processing unit integrates a data storage module and an anomaly alarm module.

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