Multifunctional integrated ballast tank water gauge detector and calibration method thereof

Abstract

The invention discloses a multifunctional integrated ballast water tank water gauge detector and a calibration method thereof, and relates to the technical field of ballast water tank water gauge detection. The multifunctional integrated ballast water tank water gauge detector comprises a data acquisition unit used for acquiring internal state data of a ballast water tank in real time and performing preprocessing; the initial correction unit is used for analyzing an initial correction water level value in the ballast water tank based on the preprocessed internal state data of the ballast water tank; the comprehensive correction unit is used for performing disturbance correction processing on the initial correction water level value in the water ballast tank to obtain a comprehensive correction water level value in the water ballast tank; by integrating a plurality of environmental parameters and carrying out dynamic correction based on real-time data, the limitation that a traditional method is difficult to adapt to a dynamic environment is solved, and by comprehensively correcting the influence of the water level and the environmental parameters, the water level in the ballast tank is accurately corrected. The water level monitoring precision can be obviously improved.

Description

Technical Field

[0001] The invention relates to the technical field of ballast water tank water gauge detection, in particular to a multifunctional integrated ballast water tank water gauge detector and a calibration method thereof. Background Art

[0002] Ballast water tanks are an important component of ships for adjusting stability, balance and displacement. The water level monitoring inside them is directly related to the safety and operational efficiency of the ships. The water level changes in ballast water tanks are usually affected by many factors such as the hull movement, ocean waves, wind speed, water flow in the tank, etc. Therefore, accurate and real-time monitoring of water level changes is crucial to ensure the stability of the ship and avoid potential risks such as excessive or insufficient water levels.

[0003] In traditional ballast water tank water level detection, common measurement methods mainly rely on water gauge readings, liquid level sensors, pressure sensors and other equipment. These technologies generally use fixed measurement methods and only rely on a single sensor or static parameters to calculate the water level. They fail to effectively consider the impact of dynamic environmental factors on the water level. Although some systems collect data by adding different sensors, they often have the following problems: ignoring dynamic environmental factors, lacking environmental correction mechanisms, relying heavily on manual intervention, and delayed measurement responses.

[0004] Moreover, in the current ballast water tank water gauge detection technology, conventional water level monitoring systems mostly rely on single water level data collection and simple correction, and fail to fully consider the comprehensive impact of dynamic environmental changes in the water body, which can easily lead to large water level measurement errors in specific environments. For example, factors such as the bubble content, pressure changes, and ship speed of the water body will have a significant impact on the water level, but traditional methods have failed to effectively integrate these complex parameters for comprehensive correction. The existing technology has failed to effectively correct the disturbance factors in the water level measurement process, which can easily lead to insufficient accuracy and stability of the water level detection system, making it difficult to adapt to the complex marine environment and dynamic changes, thereby affecting the reliability and safety of ballast water tank water level monitoring. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a multifunctional integrated ballast water tank water gauge detector and a calibration method thereof, which solves the problem that the prior art fails to effectively consider disturbances from various environmental factors, which easily leads to insufficient measurement accuracy.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multifunctional integrated ballast water tank water gauge detector, 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 acquire the internal state data of the ballast water tank in real time and perform preprocessing; the initial correction unit is used to perform comprehensive analysis on 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 and a preset water level interval, and when the comprehensive corrected water level value in the ballast water tank is outside the preset water level interval, a water level abnormality alarm is sent to relevant staff.

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

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

[0009] Furthermore, the specific steps for obtaining the comprehensive corrected water level value in the ballast water tank are as follows: reading the initial corrected water level value in the ballast water tank, and performing internal environment correction processing to obtain the internal environment corrected water level value in the ballast water tank; obtaining 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 performing 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.

[0010] Furthermore, the specific formula for calculating the comprehensive corrected water level value in the ballast water tank is as follows: ;in, is the comprehensive corrected water level value in the ballast water tank, Correct the water level value for the internal environment in the ballast tank, is a natural constant, is the hull speed of the ballast water tank, is the driving speed influence coefficient stored in the database, is the ocean wave frequency value within the set range of the ballast water tank, is the wave frequency influence coefficient stored in the database, is the wind speed value within the set range, is the wind speed influence coefficient stored in the database.

[0011] Furthermore, the specific steps for obtaining the internal environment corrected water level value in the ballast water tank are as follows: obtain the water flow velocity value and the bulkhead temperature change value in the ballast water tank; read the initial corrected water level value in the ballast water tank, and perform a comprehensive analysis based on the water flow velocity value and the bulkhead temperature change value in the ballast water tank to obtain the internal environment corrected water level value in the ballast water tank.

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

[0013] The multifunctional integrated ballast water tank water gauge detector calibration method comprises the following steps: continuously acquiring the internal state data of the ballast water tank at several time points and performing preprocessing; respectively performing change analysis on the internal state data of the ballast water tank at several time points after the preprocessing to obtain 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, and performing comprehensive analysis to obtain the comprehensive measurement index in the ballast water tank; performing judgment analysis on the comprehensive measurement index in the ballast water tank and a preset measurement interval, and when the comprehensive measurement index in the ballast water tank is outside the preset measurement interval, identifying abnormal change values, and performing calibration processing; after the calibration processing, repeating the steps of data acquisition, change analysis, and judgment analysis until the comprehensive measurement index in the ballast water tank is within the preset measurement interval.

[0014] Furthermore, the specific steps for obtaining the comprehensive measurement index in the ballast water tank are as follows: read 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, and conduct comprehensive analysis to obtain the comprehensive measurement index in the ballast water tank, and perform standardization processing on them respectively; conduct comprehensive analysis on 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 after standardization to obtain the comprehensive measurement index in the ballast water tank.

[0015] Furthermore, 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 The water pressure change value in the ballast water tank. is the water pressure change influence coefficient stored in the database, After standardization The change in water density in the ballast water tanks. is the water density change influence coefficient stored in the database, , After standardization Changes in water gauge readings in the ballast tanks. is the influence coefficient of water gauge reading change stored in the database, is the weighting coefficient of the water gauge reading change stored in the database, After standardization Changes in bubble content in the ballast water tanks. is the influence coefficient of water bubble content change stored in the database, is the weighted coefficient of the change in water bubble content stored in the database, .

[0016] The present invention has the following beneficial effects: (1) The multifunctional integrated ballast water tank water gauge detector integrates multiple environmental parameters, such as water density, water pressure, bubble content, ship speed, wave frequency, etc., and performs dynamic correction based on real-time data, thereby overcoming the limitation of traditional methods that are difficult to adapt to dynamic environments. 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 precise water level monitoring plays a vital role in ship safety, load management and ballast water control. Especially in emergency situations, it can help ships make timely decisions and avoid potential safety risks.

[0017] (2) The multifunctional integrated ballast tank water gauge detector realizes automatic water level correction through real-time data collection and dynamic calibration, and monitors the comprehensive corrected water level through the judgment and analysis unit. When the water level exceeds the preset range, it will immediately send a water level abnormality alarm to the relevant staff. This real-time response mechanism not only eliminates the delay of manual operation, but also can quickly adjust the correction coefficient in emergencies such as waves, wind speed changes or hull movement, thereby realizing timely and accurate water level monitoring. This rapid response capability significantly improves the emergency handling capability of the ship, ensures that the water level is always accurately controlled in a dynamic environment, reduces the safety hazards caused by inaccurate water level measurement, and further improves the navigation safety of the ship.

[0018] (3) The multifunctional integrated ballast tank water gauge detector realizes an efficient water level detection system through automated data acquisition, analysis and correction. It does not require human intervention and can automatically adapt to changes in the ship under different environments. The data acquisition unit collects multiple data such as water gauge readings, water pressure, bubble content, flow rate, etc. in real time, while the comprehensive correction unit dynamically adjusts the water level correction coefficient by analyzing these data in real time. Under the influence of dynamic factors such as hull speed, wave frequency, wind speed, etc., it can automatically calculate and adjust the water level data, avoiding the tedious manual operation and reducing the ease of human error. In addition, the intelligent and automated strategies can effectively reduce the operating burden of the crew and improve the efficiency of ship management. This automated water level correction and abnormal alarm mechanism not only improves data accuracy, but also reduces ship maintenance costs, because the crew does not need to intervene too much or conduct frequent manual inspections, and the operation and management of the ship is more efficient and cost-effective.

[0019] (4) The multifunctional integrated ballast water tank water gauge detector calibration method can automatically perform calibration processing when a water level abnormality is detected by continuously acquiring multi-time point data and performing comprehensive analysis, so that the system can adapt to environmental changes. Specifically, when a water level abnormality is detected, the system will compare the abnormal change value with the accurate value provided by the external device, 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, the method significantly improves the robustness of the water level measurement system and can maintain stability continuously. Even in complex or harsh environments, it can effectively reduce measurement errors. This self-correction capability 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 improving the reliability and stability of the ballast water tank water level monitoring system, and reducing the potential errors and labor costs caused by manual calibration.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a block diagram of the multifunctional integrated ballast water tank water gauge detector of the present invention.

[0022] Figure 2 The present invention is a flowchart of the specific steps for obtaining the comprehensive corrected water level value in the ballast water tank in the multifunctional integrated ballast water tank water gauge detector of the present invention.

[0023] Figure 3 The present invention is a flow chart of the calibration method of the multifunctional integrated ballast water tank water gauge detector. DETAILED DESCRIPTION

[0024] The overall idea of ​​the problem in the embodiment of this application is as follows: First, the detector collects a number of environmental and status data in the ballast water tank (such as water gauge reading, water pressure, water density, water bubble content, etc.) 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 reading, water pressure, density and bubble content. This stage mainly considers the basic physical properties of the water body and environmental changes. Through the comprehensive correction unit, the ship's speed, ocean wave frequency, wind speed and other disturbance factors will be further considered to dynamically correct the initial corrected water level and obtain a comprehensive corrected water level value to more accurately reflect the real-time changes in 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 the water level abnormality alarm to remind relevant personnel to deal with it in time.

[0025] See also Figure 1 The embodiment of the present invention provides a technical solution: a multifunctional integrated ballast water tank water gauge detector, 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 acquire the internal state data of the ballast water tank in real time and perform preprocessing; the initial correction unit is used to perform comprehensive analysis on 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 and a preset water level interval, and when the comprehensive corrected water level value in the ballast water tank is outside the preset water level interval, send a water level abnormality alarm to relevant staff.

[0026] The internal status 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.

[0027] Among them, the water gauge reading in the ballast water tank directly reflects the water level in the ballast water tank. It is usually measured by a buoy or similar device to measure the distance between the water surface and the bottom of the water tank. It is used to determine the water level change in the water tank. It is the basic data of the water level and can help determine the change of the water volume in the water tank. It is the core data of the entire system for monitoring the water level.

[0028] The water pressure value in the ballast water tank reflects the relationship between the water depth and the water density. By measuring the water pressure at a specific depth, the water level or water depth can be inferred. The water pressure increases with the increase of water depth. It directly reflects the size of the pressure in the water tank and is used to calculate the water level or determine the impact of pressure changes on the water level.

[0029] The water density value in the ballast water tank reflects the density of water in the water body, which will change with the changes in temperature, salinity and suspended matter or bubbles in the water body. The water density affects the buoyancy and pressure of the water, especially when the bubble content changes, the change in density will affect the water level measurement.

[0030] The bubble content value of the water in the ballast water tank indicates the volume percentage of bubbles in the water. Bubbles have a direct impact on the density and buoyancy of the water, thus affecting the measurement of the water level. Changes in the bubble content will lead to changes in the density of the water, which in turn affects the measurement results. A higher bubble content will increase the buoyancy of the water and affect the water gauge reading.

[0031] The specific formula for calculating the initial corrected water level in the ballast tank is as follows: ;in, is the initial corrected water level in the ballast tank, is the water gauge reading in the ballast tank, is the water pressure in the ballast tank, is the water density in the ballast tank, is the bubble content of water in the ballast water 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 is 9.81 m / s in this embodiment. 2 , It is the bubble water level correction factor stored in the database (it is used to correct the water level reading, taking into account the direct impact of the bubble content in the water body on the water level. Bubbles affect the buoyancy and density of water).

[0032] It should be explained that the bubble density influence coefficient stored in the database The specific steps of obtaining are as follows: it is obtained through experimental data and long-term field monitoring. First, experiments are carried out in water environments with different bubble concentrations to measure the relationship between water density and water level changes, and the influence of bubble content on water density is recorded. In the experiment, the bubble content is controlled and the water level changes are monitored to analyze the correction effect of bubble density changes on the water level. Then, combined with the results of multiple experiments, the data fitting method is used to obtain the influence coefficient of bubble density on water level, and it is stored in the database for dynamic correction in practical applications to ensure the accuracy of water level measurement.

[0033] Bubble level correction factor stored in database The specific steps for obtaining is: 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 in actual applications to dynamically adjust the water level measurement value to ensure that the measurement result is more accurate and reliable.

[0034] Among them, the specific implementation example of calculating the initial corrected water level value in the ballast water tank is as follows, and the following data are available: The water level reading in the ballast tank is: 20.5m.

[0035] The water pressure value in the ballast water tank is: 101.325kPa.

[0036] The water density in the ballast tank is: 1000kg / m 3 .

[0037] The bubble content value of the water in the ballast water tank is: 0.03.

[0038] The gravity acceleration in this embodiment is: 9.81m / s 2 .

[0039] The bubble density influence coefficient stored in the database is: 0.02.

[0040] The bubble water level correction factor stored in the database is: 0.02.

[0041] Substituting the above data into the specific formula for calculating the initial corrected water level value in the ballast water tank, we get: The initial corrected water level in the ballast water tank = 20.5-((101.325 / (1000*(1-0.02*0.03)*9.81))+(0.02*0.03))≈20.489.

[0042] Specifically, Figure 2 As shown, the specific steps for obtaining 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.

[0043] The specific formula for calculating the comprehensive corrected water level value in the ballast water tank is as follows: ;in, is the comprehensive corrected water level value in the ballast water tank, Correct the water level value for the internal environment in the ballast tank, is a natural constant, and in this embodiment, its value is 2.718. is the ballast water tank's hull speed value, is the driving speed influence coefficient stored in the database, is the ocean wave frequency value within the set range of the ballast water tank, is the wave frequency influence coefficient stored in the database, is the wind speed value within the set range, It is the wind speed influence coefficient stored in the database.

[0044] It needs to be explained that the ship's speed in the ballast tank will affect the water level in the tank, especially when the ship accelerates or changes direction. The water level measurement is easily disturbed by the movement of the ship, so speed correction needs to be considered.

[0045] The ocean wave frequency value within the set range of the ballast water tank reflects the periodic changes 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. The periodic fluctuation of waves needs to be considered in water level detection.

[0046] The wind speed value within the set range of the ballast water tank has an impact on the surface fluctuation of the water body and the water level in the tank. Especially in strong wind weather, high wind speed will cause obvious fluctuations on the water surface and affect the water gauge reading.

[0047] Driving speed influence coefficient stored in the database , wave frequency influence coefficient , Wind speed influence coefficient The specific steps of obtaining are: obtained through experimental data collection and historical environmental data analysis. Specifically, The speed coefficient is based on the experimental results of the water level change of the ship at different speeds and is obtained through actual measurement; (Wave frequency influence coefficient) comes from the long-term record and actual measurement of ocean wave data, reflecting the periodic impact of waves on water level; The wind speed influence coefficient is obtained through experiments on the interference of wind speed on water level. Based on the changing relationship of water level under different wind speed conditions and through analysis of these experimental data and historical environmental data, the coefficient is stored in the database for real-time correction of water level measurement.

[0048] In this implementation, by considering disturbance factors such as the ship's speed, ocean wave frequency and wind speed, the water level can be dynamically corrected, effectively eliminating the impact of external disturbances on water level measurement. Specifically, the impact of the ship's 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 impact of fluctuations on the water level, and the wind speed impact is a direct factor in water surface fluctuations. By combining these environmental factors, this method can adjust the water level measurement in real time and significantly improve the measurement accuracy. By introducing the comprehensive correction of multiple environmental factors, it can greatly improve The adaptability of water level detection is improved. In a dynamically changing marine environment, the ship's water level monitoring system needs to respond quickly to factors such as the hull speed, waves and wind speed. Traditional systems often find it difficult to automatically adapt to these environmental changes, which can easily lead to untimely water level data and large errors. Through this comprehensive correction method, the system can monitor and automatically adjust the water level data in real time to ensure 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, thereby improving the navigation safety and stability of the ship. The complex marine environment is often accompanied by wind and waves. , hull movement and other disturbance factors, which 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 combining natural constants, driving speed influence coefficients, wave frequency influence coefficients and wind speed influence coefficients for dynamic adjustment, the system has stronger robustness and fault tolerance. Even in extreme or unstable environments, the system can still automatically correct and accurately measure the water level. This capability ensures that ships can stably monitor water levels in various complex and dynamically changing environments, reduce potential safety risks caused by environmental fluctuations, and especially respond quickly 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 are prone to frequent manual inspections and manual calibrations. 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 misoperation or missed calibration. By reducing manual intervention, the ship management and maintenance process can be optimized, and work efficiency can be improved. At the same time, it also reduces the safety hazards caused by manual operation errors and improves the overall benefits of ship management.

[0049] Specifically, the specific steps for obtaining the internal environment corrected water level value in the ballast water tank are as follows: obtain the water flow velocity value and the bulkhead temperature change value in the ballast water tank (the temperature change value between the current time node and the previous time node, for example, five minutes as a time node); read the initial corrected water level value in the ballast water tank, and perform a comprehensive analysis based on the water flow velocity value and the bulkhead temperature change value in the ballast water tank to obtain the internal environment corrected water level value in the ballast water tank.

[0050] The specific formula for calculating the internal environment correction water level value in the ballast water tank is as follows: ;in, Correct the water level value for the internal environment in the ballast tank, is the initial corrected water level in the ballast tank, is the water flow velocity in the ballast water tank, is the velocity influence coefficient stored in the database, is the temperature change of the bulkhead in the ballast water tank, It is the temperature change influence coefficient stored in the database.

[0051] It needs to be explained that the water flow rate in the ballast water tank reflects the strength of the water flow. Water flow with a larger flow rate can easily disturb the water level, especially in closed or narrow water tanks. Changes in flow rate can easily affect the accuracy of water level measurement.

[0052] The change in bulkhead temperature in the ballast water tank will affect the density of the water, and thus affect the buoyancy of the water body and the change in water level. Monitoring the change in bulkhead temperature can help correct the density of the water body and ensure the accuracy of water level measurement.

[0053] Flow rate influence coefficients stored in the database The specific steps of obtaining is: obtained through experimental measurement and flow rate data analysis, specifically, It reflects the influence of water flow velocity on water level correction. Usually, experiments are conducted under different flow rate conditions to collect the relationship between water flow velocity and water level change, and then the coefficient is calculated. Through the long-term accumulation of actual ocean environment flow velocity data, the system can dynamically adjust the water level correction according to the change of flow velocity to ensure the accuracy of the measurement data.

[0054] Temperature change influence coefficients stored in the database The specific steps of obtaining are: obtained by monitoring the experimental data of the impact of temperature changes on water level. As the temperature of the water changes, the density of the water will change, thus affecting the water level measurement. This coefficient is obtained by actually measuring the change in water level at different temperatures and correlating it with the change in water temperature. This coefficient is stored in the database to help correct the water level value when the temperature fluctuates, ensuring that temperature changes do not cause inaccurate water level data.

[0055] In this implementation scheme, by introducing the monitoring of water flow velocity and bulkhead temperature changes, the water level measurement can be dynamically corrected according to the actual situation. Specifically, a water flow with a large water flow velocity will cause water level fluctuations, 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, changes in 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 bulkhead temperature change value 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. In order to ensure that the water level measurement results are not affected by temperature fluctuations, in a complex marine environment, water level changes are not only affected by tides and waves, but are also easily disturbed by changes in water flow velocity and bulkhead temperature. This method enables the water level measurement system to adapt to complex dynamic environments by real-time monitoring and comprehensive analysis of these factors. For example, when the water flow velocity is large, water level measurement is prone to errors due to changes in water flow, and traditional systems are difficult to automatically correct this. By incorporating water flow velocity into the correction model, the system can make real-time corrections to water flow disturbances, avoiding the problem that traditional methods are difficult to adapt to such dynamic changes. Changes in bulkhead temperature are also likely to lead to deviations in water level measurement, especially in high temperature environments where the density of water changes greatly. The system Automatically analyze temperature changes and correct water levels to ensure that measurement results remain 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 accuracy 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 operating errors, especially in complex marine environments. The frequency and accuracy of manual calibration are difficult to guarantee. This method automatically corrects the water level and combines real-time data on water flow rate and temperature changes to automatically adjust the water level measurement results, reducing the need for manual intervention. When the water flow rate or temperature changes, the system automatically corrects the water level without manual intervention, thereby ensuring that the system continues to be high. Efficient operation. In addition, automated calibration greatly reduces the errors caused by manual operation errors, making water level measurement more stable and reliable. With the improvement of automation, the overall efficiency and accuracy of ship water level monitoring are also improved, which helps to optimize the management and maintenance process of ships and reduce operating costs. Due to the dynamic correction of water flow rate and bulkhead temperature changes, the system can quickly adapt to different ocean conditions and hull movements, which not only makes the measurement more accurate, but also improves the system's response speed to emergencies. Under conditions such as high-speed ship driving, extreme weather or ocean waves, traditional water level monitoring systems often find it difficult to correct the water level in real time, resulting in inaccurate water level measurement, which in turn affects navigation safety. The introduction of this method enables the system to be able to correct the water level in the process of ship driving.Real-time adjustment and correction of water level data effectively eliminates the interference of water flow and temperature fluctuations on water level. This real-time calibration and automatic correction greatly improves the reliability of the system, especially in complex and unstable marine environments. The system can quickly respond to environmental changes and ensure the accuracy and stability of water level monitoring.

[0056] See also Figure 3 The multifunctional integrated ballast water tank water gauge detector calibration method comprises the following steps: continuously acquiring the internal state data of the ballast water tank at several time points and performing preprocessing; performing change analysis on the internal state data of the ballast water tank at several time points after preprocessing, obtaining 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, and performing comprehensive analysis to obtain the comprehensive measurement index in the ballast water tank; performing judgment analysis on the comprehensive measurement index in the ballast water tank and a preset measurement interval, and when the comprehensive measurement index in the ballast water tank is outside the preset measurement interval, identifying abnormal change values, and performing calibration processing; after the calibration processing, repeating the steps of data acquisition, change analysis, and judgment analysis until the comprehensive measurement index in the ballast water tank is within the preset measurement interval.

[0057] The specific example of the calibration process is as follows: for the abnormal change value, it is calibrated and analyzed with the accurate value provided by the external device, and the specific formula is: ;in, is the calibration value after calibration analysis corresponding to the abnormal change value, is the current measured value corresponding to the abnormal change value, Provides accurate values ​​for external devices, It is the calibration coefficient stored in the database, used to represent the calibration range.

[0058] It should be explained that the calibration coefficients stored in the database The specific acquisition steps are: to obtain 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, which is obtained based on long-term experimental data, standardized data on 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 factor is calculated and stored in the database. Used to adjust real-time measurements so that the detection system can output accurate data consistent with external standards.

[0059] Specifically, the specific steps for obtaining the comprehensive measurement index in the ballast water tank are as follows: read 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, and conduct comprehensive analysis to obtain the comprehensive measurement index in the ballast water tank, and perform standardization processing on them respectively; conduct comprehensive analysis on 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 after standardization to obtain the comprehensive measurement index in the ballast water tank.

[0060] 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, and in this embodiment, its value is 2.718. After standardization The water pressure change value in the ballast water tank. is the water pressure change influence coefficient stored in the database, After standardization The change in water density in the ballast water tanks. is the water density change influence coefficient stored in the database, , After standardization Changes in water gauge readings in the ballast tanks. is the influence coefficient of water gauge reading change stored in the database, is the weighting coefficient of the water gauge reading change stored in the database, After standardization Changes in bubble content in the ballast water tanks. is the influence coefficient of water bubble content change stored in the database, is the weighted coefficient of the change in water bubble content stored in the database, .

[0061] It should be explained that the water pressure change influence coefficient stored in the database , the water density change influence coefficient stored in the database The specific steps to obtain are: It is obtained by conducting experiments on water bodies under different pressures, recording the changes in water levels, and analyzing the experimental data. It is obtained by measuring the data of water level changes under different density conditions through long-term monitoring and experiments to ensure that the water level changes can be accurately corrected when the water density changes. The two coefficients are used to correct the effects of water pressure changes and water density changes on water level measurement. Water pressure changes will affect the buoyancy of the water, especially the fluctuation of water pressure in the ballast tank can easily lead to errors in water level readings, while changes in water density directly affect the buoyancy of the water and its effect on the water level, especially when the temperature, salinity or other physical conditions change, the density of the water will change.

[0062] The influence coefficient of water gauge reading change stored in the database The specific steps of obtaining the coefficient are: obtained through long-term equipment calibration experiments and field data comparison. By detecting the relationship between the water gauge reading and the actual water level under different environmental conditions, the correction ratio between the water gauge reading change and the actual water level change is determined, and finally the coefficient is obtained. It is used solely to correct the deviation of water gauge readings 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 flow rate changes or temperature changes, thereby affecting the water level measurement results.

[0063] The influence coefficient of the change of water bubble content stored in the database The specific acquisition steps are as follows: measure the water level under different bubble content conditions, record the relationship between the change of bubble content and water level, analyze the impact of bubble content on water level, and obtain the specific correction coefficient of bubble change on water level. Combined with long-term field monitoring data, especially in actual marine environments, measure the change of bubble content and analyze its impact on water level, further verify and adjust the correction coefficient. It is used to correct the influence of the change of bubble content in the water body on the water level measurement result. The bubble content in the water body will affect the density and buoyancy of the water. Therefore, the change of bubbles will directly affect the water level measurement result, especially in the ballast water tank. The change of bubble content in the water body may be caused by factors such as temperature, pressure, and ship movement.

[0064] Weighting coefficients for changes in water gauge readings stored in the database , weighted coefficient of water bubble content change stored in the database The specific acquisition steps are as follows: the two weighted coefficients are obtained through experimental data and model analysis, and the influence of the change of water gauge reading and the change of bubble content on water level measurement is analyzed, and their weights in water level correction are calculated, and finally the two weighted coefficients are obtained. These coefficients are usually obtained through multiple experiments or long-term field 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 used to correct the influence of the change of water gauge reading and the change of bubble content on water level, and they are used as weighted coefficients to indicate the relative importance of different factors on water level correction. The weighted coefficient of water gauge reading change , which indicates the importance of the change in the water gauge reading in the entire water level correction process; and the weighting coefficient of the change in the bubble content of the water body is , it indicates the correction effect of the change in bubble content on the water level.

[0065] In this implementation scheme, a comprehensive measurement index is calculated by comprehensively analyzing multiple environmental factors (such as water gauge readings, water pressure, water density, water bubble content, etc.) and standardizing them. 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, so that the impact of each factor on the water level can 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, and can eliminate the measurement error caused by a single parameter. Since water level measurement is affected by a variety of environmental factors, and the range and unit of each factor are different, if it is not performed Standardization processing, weighting between data can easily lead to over-amplification or neglect of the influence of certain factors. Therefore, standardization processing is crucial for converting measurement data from different sources into comparable data. By standardizing water gauge readings, water pressure, water density and water bubble content change values, it can ensure that all data are processed on the same basis, avoiding the excessive dominance of a single factor. At the same time, the standardized data can be uniformly weighted so that the influence of each parameter can be reasonably reflected, ensuring the accuracy of the final comprehensive measurement index. In practical applications, water levels are affected by multiple complex factors, and the interaction between these factors can easily lead to unstable or abnormal water level measurement results. For example, the bubble content of water Changes in volume will affect the density of water, and the density of water is directly related to the water level. Traditional systems are difficult to effectively handle these complex interactions. This method introduces weighted analysis of multiple factors such as water pressure, density, and bubble content, and uses weighted coefficients and influence coefficients to adjust the contribution of different factors, so that the system can make intelligent corrections based on real-time environmental data. This adaptability to complex and multiple factors enables the system to always maintain high accuracy in a dynamic environment, especially under multiple interferences such as ship movement, ocean waves, and climate change. It can still stably measure water levels. Traditional water level monitoring methods usually rely on manual inspections and regular calibrations to ensure the accuracy of the system, which not only increases labor costs, but also has It is easy to make mistakes in human operation or ignore certain environmental factors. However, this method reduces human intervention through automated data acquisition, standardized processing, comprehensive analysis and automatic calibration, so that the system can independently perform water level correction and adapt to different environmental changes. The system can automatically perform weighted analysis, standardized processing and calculate comprehensive measurement index based on real-time data. Without human intervention, the accuracy and stability of measurement can be guaranteed 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 various environmental factors, the ship does not need frequent manual calibration and intervention during operation, which greatly reduces maintenance costs.Traditional water level detection requires regular inspection and manual adjustment by the crew, while this method reduces the workload of maintenance personnel and 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 risk of accidents caused by human operational errors or missed inspections, and further improve ship management efficiency and cost-effectiveness.

[0066] In summary, this application has at least the following effects: By integrating multiple environmental parameters, such as water density, water pressure, bubble content, ship speed, wave frequency, etc., and making dynamic corrections based on real-time data, the limitation of traditional methods that they are difficult to adapt to dynamic environments is 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 precise water level monitoring plays a vital role in ship safety, load management and ballast water control. Especially in emergency situations, it can help ships make timely decisions and avoid potential safety risks.

[0067] Through real-time data collection and dynamic calibration, automatic water level correction is achieved, and the comprehensive corrected water level is monitored through the 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 emergencies such as waves, wind speed changes or hull movement, thereby achieving timely and accurate water level monitoring. This rapid response capability significantly improves the emergency response capability of the ship, ensures that the water level is always accurately controlled in a dynamic environment, reduces safety hazards caused by inaccurate water level measurement, and further improves the navigation safety of the ship.

[0068] Through automated data acquisition, analysis and correction, an efficient water level detection system is realized. It does not require human intervention and can automatically adapt to changes in ships in different environments. The data acquisition unit collects multiple data such as water gauge readings, water pressure, bubble content, flow rate, etc. in real time, while the comprehensive correction unit dynamically adjusts the water level correction coefficient by analyzing these data in real time. Under the influence of dynamic factors such as hull speed, wave frequency, wind speed, etc., it can automatically calculate and adjust the water level data, avoiding the tedious manual operation and reducing the ease of human error. In addition, intelligent and automated strategies can effectively reduce the operating 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 ship maintenance costs, because the crew does not need to intervene too much or conduct frequent manual inspections, and the operation and management of the ship is more efficient and cost-effective.

[0069] By continuously acquiring data at multiple time points and performing comprehensive analysis, it is possible to automatically perform calibration processing when a water level anomaly is detected, allowing the system to adapt to environmental changes. Specifically, when a water level anomaly is detected, the system will compare the abnormal change value with the accurate value provided by the external device, 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, the method significantly improves the robustness of the water level measurement system and can maintain stability continuously. Even in complex or harsh environments, it can effectively reduce measurement errors. This self-correction capability 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 improving the reliability and stability of the ballast water tank water level monitoring system, and reducing potential errors and labor costs caused by manual calibration.

[0070] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0071] 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 their equivalents, the present invention is also intended 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.

2. The multifunctional integrated ballast water tank water gauge detector according to claim 1 is characterized in that: 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.

3. The multifunctional integrated ballast water tank water gauge detector according to claim 2 is characterized in that: The specific formula for calculating the initial corrected water level in the ballast tank is as follows: ； in, , , , , , which 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.

4. The multifunctional integrated ballast tank water gauge detector according to claim 2 is characterized in that: 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; The ship's speed value of the ballast water tank, as well as the ocean wave frequency value and wind speed value within the set range are obtained, and a disturbance correction analysis is performed 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.

5. The multifunctional integrated ballast tank water gauge detector according to claim 4 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.

6. The multifunctional integrated ballast tank water gauge detector according to claim 4 is characterized in that: 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.

7. The multifunctional integrated ballast tank water gauge detector according to claim 6 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.

8. A method for calibrating a multifunctional integrated ballast tank water gauge detector, using the multifunctional integrated ballast tank water gauge detector according to any one of claims 1 to 7, 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.

9. The multifunctional integrated ballast tank water gauge detector calibration method according to claim 8, 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 several groups of standardized changes in water gauge readings, water pressure, water density and water bubble content in the ballast water tanks to obtain a comprehensive measurement index in the ballast water tanks.

10. The multifunctional integrated ballast tank water gauge detector calibration method according to claim 9, 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. .

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