Multifunctional integrated sounding gauge for ballast water tank and its calibration method

Abstract

The present invention discloses a multifunctional integrated sounding gauge detector for a ballast water tank and its calibration method, which relates to the technical field of sounding detection of ballast water tanks. The multifunctional integrated sounding gauge detector for a ballast water tank includes a data acquisition unit for real-time acquisition of internal state data of the ballast water tank and preprocessing thereof; an initial correction unit for analyzing the initial corrected water level value in the ballast water tank based on the preprocessed internal state data of the ballast water tank; a comprehensive correction unit for performing disturbance correction processing on the initial corrected water level value in the ballast water tank to obtain a comprehensive corrected water level value in the ballast water tank; and a judgment and analysis unit for judging and analyzing the comprehensive corrected water level value in the ballast water tank with a preset water level range. By integrating multiple environmental parameters and performing dynamic correction based on real-time data, the present invention solves the limitation that traditional methods are difficult to adapt to dynamic environments. By comprehensively correcting the influence of the water level and environmental parameters, the water level monitoring accuracy can be significantly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sounding gauge detection for ballast tanks, and particularly to a multi-functional integrated sounding gauge detector for ballast tanks and its calibration method. Background Art

[0002] A ballast tank is an important part of a ship used to adjust stability, balance and displacement. The water level monitoring inside it is directly related to the safety and operation efficiency of the ship. The water level change in the ballast tank is usually affected by various factors such as the ship's movement, ocean waves, wind speed, and water flow inside the tank. Therefore, accurately and real-time monitoring of the water level change is crucial for ensuring the stability of the ship and avoiding potential risks such as over-standard or insufficient water level.

[0003] In traditional ballast tank water level detection, common measurement methods mainly rely on devices such as sounding gauge readings, liquid level sensors and pressure sensors. These technologies generally adopt fixed measurement methods, only relying on a single sensor or static parameters for water level calculation, and failing to effectively consider the influence of dynamic environmental factors on the water level. Although some systems collect data by adding different sensors, there are often the following problems: ignoring dynamic environmental factors, lacking an environmental correction mechanism, having a high dependence on manual intervention, and a lag in measurement response.

[0004] Moreover, in the current sounding gauge detection technology for ballast tanks, conventional water level monitoring systems mostly rely on single water level data collection and simple correction, and fail to fully consider the comprehensive influence of the dynamic environmental changes of the water body, which easily leads to large water level measurement errors in specific environments. For example, factors such as the bubble content of the water body, pressure changes, and the ship's traveling speed will have a significant impact on the water level, but traditional methods have not effectively integrated these complex parameters for comprehensive correction. The existing technology has not effectively corrected the disturbance factors in the water level measurement process, which easily leads to insufficient accuracy and stability of the water level detection system, making it difficult to adapt to complex marine environments and dynamic changes, and thus affecting the reliability and safety of ballast tank water level monitoring. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a multi-functional integrated sounding gauge detector for ballast tanks and its calibration method, which solves the problem that the prior art fails to effectively consider the disturbance of various environmental factors and easily leads to insufficient measurement accuracy.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: A multi-functional integrated sounding gauge detector for a ballast water tank, comprising: a data acquisition unit, an initial correction unit, a comprehensive correction unit, and a judgment and analysis unit; the data acquisition unit is used to obtain the internal state data of the ballast water tank in real time and perform preprocessing; the initial correction unit is used to comprehensively analyze the preprocessed internal state data of the ballast water tank to obtain the initial corrected water level value in the ballast water tank; the comprehensive correction unit is used to perform disturbance correction processing on the initial corrected water level value in the ballast water tank to obtain the comprehensively corrected water level value in the ballast water tank; the judgment and analysis unit is used to judge and analyze the comprehensively corrected water level value in the ballast water tank with a preset water level range, and when the comprehensively corrected water level value in the ballast water tank is outside the preset water level range, send a water level anomaly alarm to relevant staff.

[0007] Further, the internal state data of the ballast water tank includes the sounding gauge reading value, water body pressure value, water body density value, and water body bubble content value in the ballast water tank.

[0008] Further, the specific formula for calculating the initial corrected water level value in the ballast water tank is as follows: ; where is the initial corrected water level value in the ballast water tank, is the sounding gauge reading value in the ballast water tank, is the water body pressure value in the ballast water tank, is the water body density value in the ballast water tank, is the water body bubble content value in the ballast water tank, is the bubble density influence coefficient stored in the database, is the acceleration due to gravity, is the bubble water level correction coefficient stored in the database.

[0009] Further, the specific steps for obtaining the comprehensively corrected water level value in the ballast water tank are as follows: Read the initial corrected water level value in the ballast water tank and perform internal environment correction processing to obtain the internal environment corrected water level value in the ballast water tank; Obtain the hull traveling speed value of the ballast water tank, as well as the ocean wave frequency value and wind speed value within a set range, and perform disturbance correction analysis on the internal environment corrected water level value in the ballast water tank to obtain the comprehensively corrected water level value in the ballast water tank.

[0010] Further, the specific formula for calculating the comprehensively corrected water level value in the ballast water tank is as follows: ; where is the comprehensively corrected water level value in the ballast water tank, is the internal environment corrected water level value in the ballast water tank, is the natural constant, is the hull traveling speed value of the ballast tank, is the traveling speed influence coefficient stored in the database, is the ocean wave frequency value within the set range where the ballast tank is located, is the wave frequency influence coefficient stored in the database, is the wind speed value within the set range where it is located, is the wind speed influence coefficient stored in the database.

[0011] Further, the specific steps to obtain the internal environment corrected water level value in the ballast tank are as follows: Obtain the water body flow velocity value and the change value of the bulkhead temperature in the ballast tank; Read the initial corrected water level value in the ballast tank, and conduct a comprehensive analysis in combination with the water body flow velocity value and the change value of the bulkhead temperature in the ballast tank to obtain the internal environment corrected water level value in the ballast tank.

[0012] Further, the specific formula for calculating the internal environment corrected water level value in the ballast tank is as follows: ; where, is the internal environment corrected water level value in the ballast tank, is the initial corrected water level value in the ballast tank, is the water body flow velocity value in the ballast tank, is the flow velocity influence coefficient stored in the database, is the change value of the bulkhead temperature in the ballast tank, is the temperature change influence coefficient stored in the database.

[0013] The calibration method for the multifunctional integrated ballast tank water gauge detector includes the following steps: Continuously obtain the internal state data of the ballast tank at several time points and perform preprocessing; Conduct change analysis on the internal state data of the ballast tank at several preprocessed time points respectively to obtain several sets of water gauge reading change values, water body pressure change values, water body density change values, and water body bubble content change values in the ballast tank, and conduct a comprehensive analysis to obtain the comprehensive measurement index in the ballast tank; Judge and analyze the comprehensive measurement index in the ballast tank with the preset measurement interval, and when the comprehensive measurement index in the ballast tank is outside the preset measurement interval, identify the abnormal change value and perform calibration processing; After the calibration processing, repeat the data acquisition, change analysis, and judgment analysis steps until the comprehensive measurement index in the ballast tank is within the preset measurement interval.

[0014] Further, the specific steps to obtain the comprehensive measurement index in the ballast water tank are as follows: Read several sets of changes in the water level readings, water pressure changes, water density changes, and water bubble content changes in the ballast water tank, and conduct comprehensive analysis to obtain the comprehensive measurement index in the ballast water tank, and perform standardization processing respectively; Conduct comprehensive analysis on the standardized changes in the water level readings, water pressure changes, water density changes, and water bubble content changes in several sets of ballast water tanks to obtain the comprehensive measurement index in the ballast water tank.

[0015] Further, the specific formula for calculating the comprehensive measurement index in the ballast water tank is as follows: ; where is the comprehensive measurement index in the ballast water tank, is the natural constant, is the change value of the water pressure in the th group of ballast water tanks after standardization processing, is the influence coefficient of the water pressure change stored in the database, is the change value of the water density in the th group of ballast water tanks after standardization processing, is the influence coefficient of the water density change stored in the database, , is the change value of the water level reading in the th group of ballast water tanks after standardization processing, is the influence coefficient of the water level reading change stored in the database, is the weighting coefficient of the water level reading change stored in the database, is the change value of the water bubble content in the th group of ballast water tanks after standardization processing, is the influence coefficient of the water bubble content change stored in the database, is the weighting coefficient of the water bubble content change stored in the database, .

[0016] The present invention has the following beneficial effects:

[0017] (1) The multi-functional integrated sounding gauge for ballast water tanks solves the limitation that traditional methods are difficult to adapt to dynamic environments by integrating multiple environmental parameters such as water density, water pressure, bubble content, ship traveling speed, wave frequency, etc., and making dynamic corrections based on real-time data. By comprehensively correcting the influence of water level and environmental parameters, it can significantly improve the accuracy of water level monitoring. Especially in complex environments, it can eliminate the interference of external factors and provide more accurate water level data. This precise water level monitoring plays a crucial role in ship safety, load management, and ballast water control. Especially in emergency situations, it can help the ship make timely decisions and avoid potential safety risks.

[0018] (2) The multi-functional integrated sounding gauge for ballast water tanks realizes automatic water level correction through real-time acquisition and dynamic calibration, and monitors the comprehensively corrected water level through a judgment and analysis unit. When the water level exceeds the preset range, it will immediately send a water level anomaly alarm to relevant staff. This real-time response mechanism not only eliminates the delay of manual operation but also can quickly adjust the correction coefficient in case of sudden situations such as wave, wind speed changes, or ship movement, thus achieving timely and precise water level monitoring. This rapid response ability significantly improves the ship's emergency handling capacity, ensures accurate control of the water level in a dynamic environment at all times, reduces safety hazards caused by inaccurate water level measurement, and further improves the navigation safety of the ship.

[0019] (3) The multi-functional integrated sounding gauge for ballast water tanks realizes an efficient water level detection system through automated data acquisition, analysis, and correction. Without manual intervention, it can automatically adapt to the changes of the ship in different environments. The data acquisition unit real-time collects multiple data such as sounding gauge readings, water pressure, bubble content, flow velocity, etc., while the comprehensive correction unit dynamically adjusts the water level correction coefficient by real-time analyzing these data. Under the influence of dynamic factors such as ship speed, wave frequency, and wind speed, it can automatically calculate and adjust the water level data, avoiding the cumbersome manual operation and reducing the likelihood of human errors. In addition, intelligent and automated strategies can effectively reduce the operation burden of the crew and improve the efficiency of ship management. This automated water level correction and anomaly alarm mechanism not only improves data accuracy but also reduces the ship's maintenance cost because the crew does not need to intervene too much or conduct frequent manual inspections, and the ship's operation management is more efficient and cost-effective.

[0020] (4) Calibration method for the water gauge detector of the multi-functional integrated ballast water tank. By continuously acquiring multi-time point data and conducting comprehensive analysis, it can automatically perform calibration processing when abnormal water levels are detected, enabling the system to adapt to environmental changes. Specifically, when an abnormal water level is detected, the system will compare the abnormal change value with the accurate value provided by external devices and adjust the measured value according to the stored calibration coefficient to ensure that the water level reading returns to the normal range. Through this dynamic adjustment and automatic calibration method, this method significantly improves the robustness of the water level measurement system, can continuously maintain stability, and can effectively reduce measurement errors even in complex or harsh environments. This self-correcting ability enables the system to automatically adapt to environmental changes during long-term operation, ensuring that the water level monitoring system can provide accurate data under various dynamic conditions, further enhancing the reliability and stability of the ballast water tank water level monitoring system, and reducing potential errors and labor costs caused by manual calibration.

[0021] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a block diagram of the multi-functional integrated ballast water tank water gauge detector of the present invention.

[0023] Figure 2 It is a specific step flow chart for obtaining the comprehensive corrected water level value in the ballast water tank in the multi-functional integrated ballast water tank water gauge detector of the present invention.

[0024] Figure 3 It is a flow chart of the calibration method for the multi-functional integrated ballast water tank water gauge detector of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The general idea for the problems in the embodiments of this application is as follows:

[0026] First, the detector collects multiple environmental and status data (such as water gauge readings, water body pressure, water body density, water body bubble content, etc.) in the ballast water tank in real time through the data acquisition unit, and performs preliminary processing. These data provide basic information for subsequent corrections. After acquiring and preprocessing the data, the initial correction unit analyzes the data and calculates an initial corrected water level value based on factors such as water gauge readings, water body pressure, density, and bubble content. In this stage, the basic physical properties of the water body and environmental changes are mainly considered. Through the comprehensive correction unit, disturbance factors such as the ship's traveling speed, ocean wave frequency, and wind speed will be further considered to dynamically correct the initial corrected water level and obtain the comprehensive corrected water level value to more accurately reflect the real-time change of the water level. After calculating the comprehensive corrected water level value, the judgment and analysis unit compares it with the preset water level range. If the water level exceeds the preset range, the system will automatically trigger a water level anomaly alarm to remind relevant personnel to handle it in time.

[0027] Please refer to Figure 1 , an embodiment of the present invention provides a technical solution: a multifunctional integrated water gauge detector for a ballast water tank, including: a data acquisition unit, an initial correction unit, a comprehensive correction unit, and a judgment and analysis unit; the data acquisition unit is used to obtain the internal state data of the ballast water tank in real time and perform preprocessing; the initial correction unit is used to comprehensively analyze the preprocessed internal state data of the ballast water tank to obtain the initial corrected water level value in the ballast water tank; the comprehensive correction unit is used to perform disturbance correction processing on the initial corrected water level value in the ballast water tank to obtain the comprehensive corrected water level value in the ballast water tank; the judgment and analysis unit is used to judge and analyze the comprehensive corrected water level value in the ballast water tank with a preset water level range, and when the comprehensive corrected water level value in the ballast water tank is outside the preset water level range, send a water level anomaly alarm to relevant staff.

[0028] The internal state data of the ballast water tank includes the water gauge reading value, water body pressure value, water body density value, and water body bubble content value in the ballast water tank.

[0029] Among them, the water gauge reading value in the ballast water tank directly reflects the water level height in the ballast water tank. Usually, it measures the distance between the water surface and the bottom of the water tank through a buoy or similar device to judge the water level change in the water tank. It is the basic data of the water level and can help judge the change of the water volume in the water tank. It is the core data for the entire system to monitor the water level.

[0030] The water body pressure value in the ballast water tank reflects the relationship between the water body depth and the density of water. By measuring the pressure of the water body at a specific depth, the water level or water depth can be deduced. The water body pressure increases with the increase of the water depth. It directly reflects the size of the pressure in the water tank and is used to calculate the water level or judge the influence of the pressure change on the water level.

[0031] The water density value in the ballast tank reflects the density of water in the water body, which varies with temperature, salinity, and the change of suspended solids or bubbles in the water body. The water density affects the buoyancy and pressure of water. Especially when the bubble content changes, the change of density will affect the water level measurement.

[0032] The bubble content value of the water body in the ballast tank represents the volume percentage of bubbles in the water. Bubbles have a direct impact on the water density and buoyancy, thus affecting the water level measurement. The change of bubble content will cause the change of water density, which in turn affects the measurement result. A higher bubble content will increase the buoyancy of the water body and affect the reading of the water gauge.

[0033] The specific formula for calculating the initial corrected water level value in the ballast tank is as follows: ; where is the initial corrected water level value in the ballast tank, is the water gauge reading value in the ballast tank, is the water pressure value of the water body in the ballast tank, is the water density value of the water body in the ballast tank, is the bubble content value of the water body in the ballast tank, is the bubble density influence coefficient stored in the database (which adjusts the density of the water body), is the acceleration due to gravity, which takes the value of 9.81 m / s in this embodiment 2 , is the bubble water level correction coefficient stored in the database (which is used to correct the water level reading, considering the direct impact of the bubble content in the water body on the water level. Bubbles affect the buoyancy and density of water).

[0034] It should be explained that the specific acquisition steps of the bubble density influence coefficient stored in the database are as follows: It is obtained through experimental data and long-term on-site monitoring. First, through experiments in the water body environment with different bubble concentrations, measure the relationship between water density and water level change, and record the impact of bubble content on water density. In the experiment, by controlling the bubble content and monitoring the water level change, analyze the correction effect of bubble density change on the water level. Then, combine the results of multiple experiments, and use the data fitting method to obtain the influence coefficient of bubble density on the water level, and store it in the database for dynamic correction in actual applications to ensure the accuracy of water level measurement.

[0035] The bubble water level correction coefficient The specific acquisition steps are as follows: It is obtained by correcting the influence of the bubble content in the water body. This coefficient reflects the correction effect of the proportion of bubbles in the water body on the water level measurement result. Specifically, the bubble content will affect the buoyancy of water, thereby affecting the measurement accuracy of the water level. This correction coefficient is usually obtained from experimental data. Based on the relationship between the bubble content and the water level change in the actual marine environment, through experimental measurement and data analysis, the bubble water level correction coefficient stored in the database can be used to dynamically adjust the water level measurement value in actual applications to ensure that the measurement result is more accurate and reliable.

[0036] Among them, the specific implementation example of calculating the initial corrected water level value in the ballast tank is as follows. The following data are available:

[0037] The water gauge reading value in the ballast tank is: 20.5 m.

[0038] The water body pressure value in the ballast tank is: 101.325 kPa.

[0039] The water body density value in the ballast tank is: 1000 kg / m 3 .

[0040] The water body bubble content value in the ballast tank is: 0.03.

[0041] The value of gravitational acceleration in this embodiment is: 9.81 m / s 2 .

[0042] The bubble density influence coefficient stored in the database is: 0.02.

[0043] The bubble water level correction coefficient stored in the database is: 0.02.

[0044] Substitute the above data into the specific formula for calculating the initial corrected water level value in the ballast tank respectively, and we get:

[0045] The initial corrected water level value in the ballast tank = 20.5 - ((101.325 / (1000 * (1 - 0.02 * 0.03) * 9.81)) + (0.02 * 0.03)) ≈ 20.489.

[0046] Specifically, as Figure 2 shown, the specific steps to obtain the comprehensive corrected water level value in the ballast tank are as follows: Read the initial corrected water level value in the ballast tank and perform internal environment correction processing to obtain the internal environment corrected water level value in the ballast tank; Obtain the hull driving speed value of the ballast tank, as well as the ocean wave frequency value and wind speed value within the set range, and perform disturbance correction analysis on the internal environment corrected water level value in the ballast tank to obtain the comprehensive corrected water level value in the ballast tank.

[0047] The specific formula for calculating the comprehensive corrected water level value in the ballast tank is as follows: ; where is the comprehensive corrected water level value in the ballast tank, is the internal environment corrected water level value in the ballast tank, is the natural constant, which takes the value of 2.718 in this embodiment, is the hull traveling speed value of the ballast tank, is the traveling speed influence coefficient stored in the database, is the ocean wave frequency value within the set range where the ballast tank is located, is the wave frequency influence coefficient stored in the database, is the wind speed value within the set range where it is located, is the wind speed influence coefficient stored in the database.

[0048] It should be noted that the hull traveling speed value of the ballast tank will affect the water level in the tank. Especially when the hull accelerates or changes direction, the water level measurement is easily disturbed by the hull movement. Therefore, the correction of speed needs to be considered.

[0049] The ocean wave frequency value within the set range where the ballast tank is located reflects the periodic change of the waves, which will affect the water level reading in the tank. Especially under the action of larger waves, the relationship between the wave frequency and the water level change is significant, and the periodic fluctuation of the waves needs to be considered in the water level detection.

[0050] The wind speed value within the set range where the ballast tank is located affects the surface fluctuation of the water body and the water level in the tank. Especially in strong wind weather, when the wind speed is large, it will cause obvious fluctuations on the water surface and affect the water gauge reading.

[0051] The traveling speed influence coefficient stored in the database , the wave frequency influence coefficient , the wind speed influence coefficient The specific acquisition steps are as follows: obtained through experimental data collection and historical environmental data analysis. Specifically, (the traveling speed influence coefficient) is based on the experimental results of the water level change of the ship at different speeds and is obtained through actual measurement; (the wave frequency influence coefficient) comes from the long-term record and actual measurement of ocean wave data, reflecting the periodic influence of waves on the water level; (the wind speed influence coefficient) is obtained through the experiment on the interference effect of wind speed on the water level. Based on the change relationship of the water level under different wind speed conditions, through the analysis of these experimental data and historical environmental data, the coefficient is stored in the database for real-time correction of water level measurement.

[0052] In this implementation scheme, by considering disturbance factors such as the hull traveling speed, ocean wave frequency, and wind speed, the water level can be dynamically corrected, effectively eliminating the influence of external disturbances on water level measurement. Specifically, the influence of the hull traveling speed on the water level in the water tank, especially when accelerating or changing direction, will cause water level changes, which need to be corrected in the measurement. The wave frequency reflects the periodic influence of fluctuations on the water level, and the wind speed influence is a direct factor for surface fluctuations. By integrating these environmental factors, this method can adjust water level measurement in real time, significantly improving the measurement accuracy. Through the comprehensive correction of multiple environmental factors, the adaptability of water level detection is greatly enhanced. In a dynamically changing ocean environment, the water level monitoring system of a ship needs to quickly respond to factors such as hull speed, waves, and wind speed. Traditional systems often have difficulty automatically adapting to these environmental changes, easily resulting in untimely water level data and large errors. Through this comprehensive correction method, the system can monitor and automatically adjust water level data in real time, ensuring the reliability and accuracy of water level measurement under different environmental conditions. Whether it is the disturbance during hull acceleration or the changes in waves and wind speed, the system can intelligently identify and make corrections, improving the navigation safety and stability of the ship. The complex ocean environment is often accompanied by disturbance factors such as wind and waves, and hull movement. These factors often make it difficult for traditional water level monitoring systems to accurately capture water level changes. By incorporating these complex external factors into the system correction model and dynamically adjusting them in combination with natural constants, hull speed influence coefficients, wave frequency influence coefficients, and wind speed influence coefficients, the system has stronger robustness and fault tolerance capabilities. Even in extreme or unstable environments, the system can still automatically make corrections and accurately measure the water level. This ability ensures that the ship can stably monitor the water level in various complex and dynamically changing environments, reducing potential safety risks caused by environmental fluctuations, especially the rapid response to water level changes during navigation. Since the accuracy of water level monitoring data is directly related to the safety and operating efficiency of the ship, traditional systems often require frequent manual inspections and manual calibrations. However, the automatic correction function of this method greatly reduces the need for manual intervention. The system can automatically correct and calibrate water level data based on real-time data and preset rules, reducing measurement errors caused by manual misoperations or missed calibrations. By reducing manual intervention, the ship management and maintenance processes are optimized, improving work efficiency and at the same time reducing safety hazards easily brought by manual operation errors, enhancing the overall benefits of ship management.

[0053] Specifically, the specific steps to obtain the internal environment corrected water level value in the ballast tank are as follows: Obtain the water body flow velocity value and the change value of the tank wall temperature (the temperature change value between the current time node and the previous time node, for example, taking five minutes as a time node) in the ballast tank; Read the initial corrected water level value in the ballast tank, and conduct a comprehensive analysis in combination with the water body flow velocity value and the change value of the tank wall temperature in the ballast tank to obtain the internal environment corrected water level value in the ballast tank.

[0054] The specific formula for calculating the internal environment corrected water level value in the ballast tank is as follows: ; where is the internal environment corrected water level value in the ballast tank, is the initial corrected water level value in the ballast tank, is the water body flow velocity value in the ballast tank, is the flow velocity influence coefficient stored in the database, is the change value of the tank wall temperature in the ballast tank, is the temperature change influence coefficient stored in the database.

[0055] It should be explained that the water body flow velocity value in the ballast tank reflects the intensity of the water flow. A water flow with a larger flow velocity is likely to disturb the water level. Especially in a closed or narrow water tank, the change in flow velocity is likely to affect the accuracy of water level measurement.

[0056] The change value of the tank wall temperature in the ballast tank will affect the density of water, and thus affect the buoyancy of the water body and the change of the water level. Monitoring the change value of the tank wall temperature can help correct the density of the water body to ensure the accuracy of water level measurement.

[0057] The flow velocity influence coefficient stored in the database is specifically obtained through experimental measurement and flow velocity data analysis. Specifically, reflects the influence of the water body flow velocity on water level correction. Usually, through experiments under different flow velocity conditions, the relationship between the water body flow velocity and the water level change is collected, and then this coefficient is calculated. Through the long-term accumulated actual ocean environment flow velocity data, the system can dynamically adjust the water level correction according to the change of the flow velocity to ensure the accuracy of the measurement data.

[0058] The temperature change influence coefficient stored in the database is specifically obtained through the experimental data monitoring the influence of temperature change on the water level. As the temperature of the water body changes, the density of water will change, thus affecting the water level measurement. It is obtained by actually measuring the change of the water level at different temperatures and conducting correlation analysis with the water temperature change. This coefficient is stored in the database to help correct the water level value during temperature fluctuations to ensure that the temperature change will not cause inaccurate water level data.

[0059] In this implementation, by introducing the monitoring of water flow velocity and the change of bulkhead temperature, the water level measurement can be dynamically corrected according to the actual situation. Specifically, a large water flow velocity will cause fluctuations in the water level. Especially in a closed or narrow water tank, the change of water flow is likely to directly affect the accuracy of the water level. By real-time monitoring of the water flow velocity and correcting it in combination with the flow velocity influence coefficient, the system can eliminate the error caused by the water flow and provide more accurate water level data. Similarly, the change of bulkhead temperature will also affect the density of the water body, thereby changing the buoyancy of the water body and affecting the change of the water level. By introducing the value of the change of bulkhead temperature and correcting it in combination with the temperature change influence coefficient, the accuracy and stability of the water level measurement can be effectively improved. Especially under different temperature conditions, it can ensure that the water level measurement result is not affected by temperature fluctuations. In a complex marine environment, the change of the water level is not only affected by tides and waves, but is also easily disturbed by the change of water flow velocity and bulkhead temperature. This method enables the water level measurement system to adapt to the complex dynamic environment through real-time monitoring and comprehensive analysis of these factors. For example, when the water flow velocity is large, the water level measurement is likely to generate errors due to the change of water flow, and it is difficult for traditional systems to automatically correct this. By incorporating the water flow velocity into the correction model, the system can perform real-time correction of the water flow disturbance, avoiding the problem that traditional methods are difficult to adapt to this dynamic change. The change of bulkhead temperature is also likely to cause deviation in water level measurement. Especially in a high-temperature environment, the density of water changes greatly. The system automatically analyzes the temperature change and corrects the water level to ensure that the measurement results are consistent under different environmental conditions. Therefore, this comprehensive correction method greatly enhances the system's adaptability to various environmental factors, enabling it to maintain high precision and stability in different operating environments. Traditional water level detection methods often rely on manual inspection and manual calibration, which are easily affected by human operation errors. Especially in a complex marine environment, it is difficult to guarantee the frequency and accuracy of manual calibration. However, this method can automatically correct the water level by combining the real-time data of water flow velocity and temperature change, and can automatically adjust the water level measurement result, reducing the need for manual intervention. When the water flow velocity or temperature changes, the system automatically corrects the water level without manual intervention, thus ensuring the continuous and efficient operation of the system. In addition, automatic calibration greatly reduces the errors caused by human operation mistakes, making the water level measurement more stable and reliable. With the improvement of the degree of automation, the overall efficiency and accuracy of ship water level monitoring are also improved, which helps to optimize the ship management and maintenance process and reduce the operation cost. Due to the dynamic correction of water flow velocity and bulkhead temperature change, the system can quickly adapt to different marine conditions and hull movements. This not only makes the measurement more accurate, but also improves the system's response speed to emergencies. Under conditions such as high-speed ship travel, extreme weather or ocean waves, traditional water level monitoring systems often have difficulty in real-time correcting the water level, resulting in inaccurate water level measurement and affecting navigation safety. The introduction of this method enables the system toThe water level data is adjusted and corrected in real time, effectively eliminating the interference of water flow and temperature fluctuations on the water level. This real-time calibration and automatic correction greatly improve the reliability of the system. Especially in complex and unstable marine environments, the system can quickly respond to environmental changes to ensure the accuracy and stability of water level monitoring.

[0060] Please refer to Figure 3 , the calibration method of the multifunctional integrated sounding gauge detector for the ballast water tank includes the following steps: continuously obtain the internal state data of the ballast water tank at several time points and perform preprocessing; perform change analysis on the preprocessed internal state data of the ballast water tank at several time points to obtain several sets of changes in the sounding gauge readings, water body pressure changes, water body density changes, and water body bubble content changes in the ballast water tank, and perform comprehensive analysis to obtain the comprehensive measurement index in the ballast water tank; judge and analyze the comprehensive measurement index in the ballast water tank with a preset measurement interval, and when the comprehensive measurement index in the ballast water tank is outside the preset measurement interval, identify the abnormal change value and perform calibration processing; after the calibration processing, repeat the data acquisition, change analysis, and judgment analysis steps until the comprehensive measurement index in the ballast water tank is within the preset measurement interval.

[0061] Among them, the specific example of the calibration process is as follows: for the abnormal change value, perform calibration analysis with the accurate value provided by the external device, and its specific formula is: ; where is the calibrated value after calibration analysis corresponding to the abnormal change value, is the current measured value corresponding to the abnormal change value, is the accurate value provided by the external device, is the calibration coefficient stored in the database, used to represent the calibration amplitude.

[0062] It should be explained that the specific acquisition steps of the calibration coefficient stored in the database are: obtained through the relationship between the standardized data provided by the external device and the actual measurement data. Specifically, reflects the ratio adjustment between the measured value and the standard value, and it is obtained based on long-term experimental data, standardized data of equipment performance, and comparative test results. By comparing the current value measured by the equipment with the standard value of the external standard equipment, the calibration coefficient is calculated and stored in the database. In actual use, is used to adjust the real-time measured value so that the detection system can output accurate data consistent with the external standard.

[0063] Specifically, the specific steps to obtain the comprehensive measurement index in the ballast water tank are as follows: Read several groups of changes in the water level reading, water body pressure, water body density, and water body bubble content in the ballast water tank, and conduct comprehensive analysis to obtain the comprehensive measurement index in the ballast water tank, and perform standardization processing respectively; Conduct comprehensive analysis on the standardized changes in the water level reading, water body pressure, water body density, and water body bubble content in several groups of ballast water tanks to obtain the comprehensive measurement index in the ballast water tank.

[0064] The specific formula for calculating the comprehensive measurement index in the ballast water tank is as follows: ; where is the comprehensive measurement index in the ballast water tank, is the natural constant, which takes the value of 2.718 in this embodiment, is the change value of the water body pressure in the th group of ballast water tanks after standardization processing, is the influence coefficient of the change in water body pressure stored in the database, is the change value of the water body density in the th group of ballast water tanks after standardization processing, is the influence coefficient of the change in water body density stored in the database, , is the change value of the water level reading in the th group of ballast water tanks after standardization processing, is the influence coefficient of the change in water level reading stored in the database, is the weighting coefficient of the change in water level reading stored in the database, is the change value of the water body bubble content in the th group of ballast water tanks after standardization processing, is the influence coefficient of the change in water body bubble content stored in the database, is the weighting coefficient of the change in water body bubble content stored in the database, .

[0065] It should be explained that the specific steps to obtain the influence coefficient of the change in water body pressure stored in the database and the influence coefficient of the change in water body density stored in the database are as follows: is obtained by conducting experiments on the water body at different pressures, recording the change in water level, and analyzing the experimental data. Similarly, It is obtained through long-term monitoring and experiments by measuring the data of water level changes under different density conditions to ensure that when the water body density changes, the changes in water level can be accurately corrected. These two coefficients are respectively used to correct the impacts of water body pressure changes and water body density changes on water level measurement. The pressure change of the water body will affect the buoyancy of the water body. Especially inside the ballast water tank, the fluctuation of the water body pressure is likely to cause errors in water level readings. The change in water body density directly affects the buoyancy of water and its impact on water level. Especially when different physical conditions such as temperature, salinity, or others change, the density of the water body will change.

[0066] Coefficient of influence on the change of water gauge reading stored in the database The specific acquisition steps are as follows: It is obtained through long-term equipment calibration experiments and on-site data comparison. By detecting the relationship between the water gauge reading and the actual water level under different environmental conditions, determining the correction ratio between the change in water gauge reading and the change in actual water level, and finally obtaining this coefficient, the coefficient of influence on the change of water gauge reading is solely used to correct the deviation of the water gauge reading caused by water gauge equipment or other external factors (such as temperature changes, equipment accuracy problems, etc.). The water gauge reading itself may be affected by factors such as hull movement, water body flow rate changes, or temperature changes, thus affecting the water level measurement result.

[0067] Coefficient of influence on the change of water body bubble content stored in the database The specific acquisition steps are as follows: Under different bubble content conditions, measure the water level, record the relationship between the change in bubble content and the water level, analyze the impact of bubble content on the water level, obtain the specific correction coefficient for the impact of bubble changes on the water level, and combine long-term on-site monitoring data. Especially in the actual marine environment, measure the change in bubble content and analyze its impact on the water level to further verify and adjust the correction coefficient. is used to correct the impact of the change in water body bubble content on the water level measurement result. The content of bubbles in the water body will affect the density and buoyancy of water. Therefore, the change in bubbles will directly affect the water level measurement result. Especially inside the ballast water tank, the change in the water body bubble content may be caused by factors such as temperature, pressure, and ship movement.

[0068] Weighted coefficient of the change in water gauge reading stored in the database Weighted coefficient of the change in water body bubble content stored in the database The specific acquisition steps are as follows: These two weighting coefficients are obtained through experimental data and model analysis. By analyzing the influence of the changes in staff gauge readings and bubble content on water level measurement, the weights in water level correction are calculated, and finally these two weighting coefficients are obtained. These coefficients are usually obtained through multiple experiments or long-term on-site data accumulation to ensure that the weights of various factors in water level correction are reasonable and can accurately reflect the influence of different factors on water level changes. These two coefficients are respectively used to correct the influence of changes in staff gauge readings and bubble content on water level, and as weighting coefficients, they represent the relative importance of different factors in water level correction. The weighting coefficient of the change in staff gauge readings , which represents the importance of the change in staff gauge readings in the entire water level correction process; while the weighting coefficient of the change in water body bubble content , represents the correction effect of the change in bubble content on water level.

[0069] In this implementation scheme, by comprehensively analyzing multiple environmental factors (such as water gauge readings, water pressure, water density, water bubble content, etc.), and performing standardization processing on them, and then calculating a comprehensive measurement index. This comprehensive analysis method takes into account all factors that are likely to affect the water level, and eliminates the differences in the dimensions of each parameter through standardization, enabling the influence of each factor on the water level to be balanced and accurately reflected. Through the comprehensive measurement index, the system can accurately correct the water level, thereby effectively improving the accuracy of water level measurement. Especially under complex environmental conditions, it can eliminate measurement errors caused by a single parameter. Since water level measurement is affected by multiple environmental factors, and the change ranges and units of each factor are different, if standardization processing is not carried out, the weighting between data is likely to cause the influence of some factors to be over-amplified or ignored. Therefore, standardization processing is crucial for converting measurement data from different sources into comparable data. By standardizing the changes in water gauge readings, water pressure, water density, and water bubble content, etc., it can ensure that all data is processed on the same basis, avoiding the over-dominance of a single factor. At the same time, the standardized data can be uniformly weighted and calculated, enabling the influence of each parameter to be reasonably reflected and ensuring the accuracy of the final comprehensive measurement index. In practical applications, the water level is affected by multiple complex factors, and the interaction between these factors is likely to cause unstable or abnormal water level measurement results. For example, the change in water bubble content will affect the density of water, and the water density is directly related to the water level. Traditional systems are often difficult to effectively handle these complex interactions. However, this method introduces a weighted analysis of multiple factors such as water pressure, density, and bubble content, and uses weighting coefficients and influence coefficients to adjust the contributions of different factors, enabling the system to make intelligent corrections based on real-time environmental data. This adaptability to complex multi-factors enables the system to always maintain high precision in a dynamic environment. Especially under multiple interferences such as ship movement, ocean waves, and climate change, it can still stably measure the water level. Traditional water level monitoring methods usually rely on manual inspections, regular calibrations, etc. to ensure the accuracy of the system. This not only increases labor costs but also has the possibility of human operation errors or ignoring some environmental factors. However, this method reduces manual intervention through automated data acquisition, standardization processing, comprehensive analysis, and automatic calibration, enabling the system to autonomously correct the water level and adapt to different environmental changes. The system can automatically perform weighted analysis, standardization processing, and calculate the comprehensive measurement index based on real-time data, and can ensure the accuracy and stability of measurement without manual intervention in a changing environment. In addition, the system can respond in real time and automatically alarm when the water level exceeds the preset range, further improving the efficiency and safety of monitoring. Due to the intelligent correction ability of this method under multiple environmental factors, ships do not need frequent manual calibration and intervention during operation, greatly reducing maintenance costs.Traditional water level detection requires crew members to regularly check and manually adjust. However, this method reduces the workload of maintenance personnel and their dependence on equipment through automated processing and intelligent calibration. In addition, the intelligence and automation of the system enhance the safety of ship operation, reduce the accident risk caused by human operation errors or missed inspections, and further improve ship management efficiency and cost-effectiveness.

[0070] In summary, this application has at least the following effects:

[0071] By integrating multiple environmental parameters, such as water density, water pressure, bubble content, ship hull traveling speed, wave frequency, etc., and making dynamic corrections based on real-time data, the limitations of traditional methods that are difficult to adapt to dynamic environments are solved. By comprehensively correcting the influence of water level and environmental parameters, the accuracy of water level monitoring can be significantly improved. Especially in complex environments, it can eliminate the interference of external factors and provide more accurate water level data. This accurate water level monitoring plays a crucial role in ship safety, load management, and ballast water control. Especially in emergency situations, it can help the ship make timely decisions and avoid potential safety risks.

[0072] Through real-time acquisition and dynamic calibration, automated water level correction is achieved, and the comprehensive corrected water level is monitored by a judgment and analysis unit. When the water level exceeds the preset range, an abnormal water level alarm will be immediately sent to relevant staff. This real-time response mechanism not only eliminates the delay of manual operation but also can quickly adjust the correction coefficient in case of emergencies such as wave, wind speed changes, or ship hull movement, thus achieving timely and accurate water level monitoring. This fast response ability significantly improves the ship's emergency handling ability, ensures accurate control of the water level in a dynamic environment at all times, reduces the safety hazards caused by inaccurate water level measurement, and further improves the navigation safety of the ship.

[0073] Through automated data acquisition, analysis, and correction, an efficient water level detection system is achieved. Without manual intervention, it can automatically adapt to the changes of the ship in different environments. The data acquisition unit real-time collects multiple data such as water gauge readings, water pressure, bubble content, flow rate, etc., and the comprehensive correction unit dynamically adjusts the water level correction coefficient by real-time analyzing these data. Under the influence of dynamic factors such as ship hull speed, wave frequency, and wind speed, it can automatically calculate and adjust the water level data, avoiding the cumbersome manual operation and reducing the likelihood of human errors. In addition, intelligent and automated strategies can effectively reduce the operation burden of crew members and improve the efficiency of ship management. This automated water level correction and abnormal alarm mechanism not only improves data accuracy but also reduces the ship maintenance cost because crew members do not need to intervene too much or conduct frequent manual inspections, and the operation management of the ship is more efficient and cost-effective.

[0074] By continuously acquiring multi-timepoint data and conducting comprehensive analysis, it is possible to automatically perform calibration processing when detecting abnormal water levels, enabling the system to adapt to environmental changes. Specifically, when an abnormal water level is detected, the system compares the abnormal change value with the accurate value provided by external devices and adjusts the measured value according to the stored calibration coefficient to ensure that the water level reading returns to the normal range. Through this dynamic adjustment and automatic calibration method, this approach significantly improves the robustness of the water level measurement system, enabling it to continuously maintain stability. Even in complex or harsh environments, it can effectively reduce measurement errors. This self-correction ability allows the system to automatically adapt to environmental changes during long-term operation, ensuring that the water level monitoring system can provide accurate data under various dynamic conditions, further enhancing the reliability and stability of the ballast water tank water level monitoring system and reducing potential errors and labor costs caused by manual calibration.

[0075] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0076] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and its equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. Multifunctional integrated ballast tank water gauge detector, characterized by: include: Data acquisition unit, initial correction unit, comprehensive correction unit, judgment and analysis unit; The data acquisition unit is used to acquire the internal state data of the ballast water tank in real time and perform preprocessing; The initial correction unit is used to perform a comprehensive analysis on the pre-processed internal state data of the ballast water tank to obtain an initial corrected water level value in the ballast water tank; The comprehensive correction unit is used to perform disturbance correction processing on the initial corrected water level value in the ballast water tank to obtain a comprehensive corrected water level value in the ballast water tank; The judgment and analysis unit is used to judge and analyze the comprehensive corrected water level value in the ballast water tank and the preset water level interval, and send a water level abnormality alarm to relevant staff when the comprehensive corrected water level value in the ballast water tank is outside the preset water level interval; The internal state data of the ballast water tank includes the water gauge reading value, water pressure value, water density value, and water bubble content value in the ballast water tank; The specific steps to obtain the comprehensive corrected water level value in the ballast water tank are as follows: Read the initial corrected water level value in the ballast water tank, and perform internal environment correction processing to obtain the internal environment corrected water level value in the ballast water tank; Obtain the hull speed value of the ballast water tank, as well as the ocean wave frequency value and wind speed value within the set range, and perform disturbance correction analysis on the internal environment corrected water level value in the ballast water tank to obtain the comprehensive corrected water level value in the ballast water tank; The specific steps to obtain the internal environment corrected water level value in the ballast water tank are as follows: Obtain the water flow velocity value and the temperature change value of the ballast water tank; The initial corrected water level value in the ballast water tank is read, and a comprehensive analysis is performed in combination with the water flow velocity value in the ballast water tank and the temperature change value of the bulkhead to obtain the internal environment corrected water level value in the ballast water tank.

2. The multifunctional integrated ballast water tank water gauge detector according to claim 1 is characterized in that: The specific formula for calculating the initial corrected water level in the ballast tank is as follows: ； in, , , , , They are the initial corrected water level value in the ballast water tank, the water gauge reading value, the water pressure value, the water density value, and the water bubble content value. is the acceleration due to gravity, , They are the bubble density influence coefficient and the bubble water level correction coefficient stored in the database respectively.

3. The multifunctional integrated ballast water tank water gauge detector according to claim 1 is characterized in that: The specific formula for calculating the comprehensive corrected water level value in the ballast water tank is as follows: ； in, , They are the comprehensive corrected water level value in the ballast water tank and the internal environment corrected water level value. is a natural constant, is the ballast water tank's hull speed value, , They are the ocean wave frequency value and wind speed value within the set range of the ballast water tank. , , They are the driving speed influence coefficient, wave frequency influence coefficient, and wind speed influence coefficient stored in the database respectively.

4. The multifunctional integrated ballast water tank water gauge detector according to claim 1 is characterized in that: The specific formula for calculating the internal environment correction water level value in the ballast water tank is as follows: ； in, , , , They are the internal environment correction water level value in the ballast water tank, the initial correction water level value, the water flow velocity value, and the bulkhead temperature change value. , They are flow velocity influence coefficient and temperature change influence coefficient stored in the database respectively.

5. A method for calibrating a multifunctional integrated ballast water tank water gauge detector, using the multifunctional integrated ballast water tank water gauge detector according to any one of claims 1 to 4, characterized in that: The following steps are involved: Continuously obtain the internal status data of the ballast water tank at several time points and perform preprocessing; The internal state data of the ballast water tank at several time points after preprocessing are analyzed for changes, and several groups of water gauge reading change values, water pressure change values, water density change values, and water bubble content change values ​​in the ballast water tank are obtained. A comprehensive analysis is then performed to obtain a comprehensive measurement index in the ballast water tank. The comprehensive measurement index in the ballast water tank is judged and analyzed with the preset measurement interval, and when the comprehensive measurement index in the ballast water tank is outside the preset measurement interval, the abnormal change value is identified and calibration is performed; After the calibration process, the steps of data acquisition, change analysis, and judgment analysis are repeated until the comprehensive measurement index in the ballast water tank is within the preset measurement range.

6. The multifunctional integrated ballast tank water gauge detector calibration method according to claim 5 is characterized in that: The specific steps to obtain the comprehensive measurement index in the ballast water tank are as follows: Read the change values ​​of water gauge readings, water pressure change values, water density change values, and water bubble content change values ​​in several groups of ballast water tanks, and conduct comprehensive analysis to obtain the comprehensive measurement index in the ballast water tanks, and perform standardization processing respectively; A comprehensive analysis is performed on the changes in water gauge readings, water pressure, water density and water bubble content in several groups of ballast water tanks after standardization to obtain a comprehensive measurement index in the ballast water tank.

7. The multifunctional integrated ballast tank water gauge detector calibration method according to claim 6 is characterized in that: The specific formula for calculating the comprehensive measurement index in the ballast water tank is as follows: ； in, is the comprehensive measurement index in the ballast water tank, is a natural constant, , , , After standardization, Changes in water pressure, water density, water gauge readings, and water bubble content in the ballast water tanks. , They are the water pressure change influence coefficient and water density change influence coefficient stored in the database, , , They are the influence coefficient of water gauge reading change and the influence coefficient of water bubble content change stored in the database. , They are the weighted coefficients of the water gauge reading change and the weighted coefficients of the water bubble content change stored in the database. .

Images