Multi-mode coordinated ship main and auxiliary power automatic switching system

Abstract

The invention discloses a multi-mode coordinated ship main and auxiliary power automatic switching system, which relates to the technical field of ship power systems and comprises a monitoring system, a diagnosis decision system, an execution system, a switching verification system, a maintenance management system and a data communication system. According to the invention, the airborne weather radar, the ship weather instrument and the weather fax receiver are used for monitoring the current weather condition of navigation and predicting the weather condition of a future navigation route, so that a prediction basis is provided for a power system operation mode selected by future ship navigation; meanwhile, the ship weather instrument monitors surrounding wind speed, wind direction, air temperature and humidity data in real time when the ship sails, the current data is stored in the data storage, a database is formed, and a follow-up maintenance management system can predict potential risks according to historical data conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of ship power switching, and in particular to a multi-mode coordinated ship main and auxiliary power automatic switching system. Background Art

[0002] The ship's power unit is an important and indispensable component of the ship, known as the "heart of the ship". It is a power equipment set up to ensure the normal operation of the ship to ensure the normal navigation of the ship. It mainly includes: main power unit, auxiliary power unit, other auxiliary engines and equipment. The existing main and auxiliary power switching system can only manually execute the power system switching working mode according to the current main and auxiliary power usage and navigation requirements, and cannot predict potential risks during navigation.

[0003] The defects of the existing ship power switching system are:

[0004] 1. Patent document CN105035296B discloses a hybrid electric propulsion ship energy system working mode automatic switching device and method, which mainly considers how to automatically switch energy while avoiding manual switching deficiencies, reducing failures and ensuring safety, but does not consider how to increase the prediction accuracy of meteorological data to facilitate the prediction of potential navigation risks.

[0005] 2. Patent document CN114489016B discloses a multi-mode switching control and fault handling device and method for a ship power system, which mainly considers how to provide different solutions according to the type and timing of faults occurring during different mode switching processes, but does not consider how to conduct all-round real-time monitoring of the ship and provide a basis for future maintenance and management;

[0006] 3. Patent document CN110532613B discloses a method and device for identifying the operating conditions of a ship power system. The method mainly considers how to effectively classify the different operating conditions of the ship power system, but does not consider developing a corresponding switching scheme for the power system operating mode through diagnosis to ensure a smooth transition of the ship power when the system is automatically switched;

[0007] 4. Patent document CN114633640B discloses a power switching system, method and rail vehicle for a rail vehicle. It mainly considers how to select a power supply mode and complete the switching of the power supply mode, but does not consider evaluating the effect of the new working mode after the power system is switched to check whether the navigation effect of the ship after the switch reaches the expected goal. Summary of the invention

[0008] The object of the present invention is to provide a multi-mode coordinated ship main and auxiliary power automatic switching system to solve the problems raised in the above background technology.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-mode coordinated ship main and auxiliary power automatic switching system, including a monitoring system, a diagnosis and decision system, an execution system, a switching verification system, a maintenance management system and a data communication system, wherein the monitoring system is used to collect data on the working status of the power system, the navigation status of the ship and the weather conditions in real time, the diagnosis and decision system diagnoses and makes decisions on the data monitored by the monitoring system, and determines the best switching time and method, the execution system performs the switching operation according to the diagnosis and decision results of the diagnosis and decision system, the switching verification system verifies the switching effect after the switching operation, and evaluates and records it, the maintenance management system is used to monitor and maintain the entire power system, prevent and handle possible faults, and the data communication system is used to wirelessly transmit the real-time data monitored by the monitoring system;

[0010] The monitoring system includes a working state monitoring unit, a navigation state monitoring unit, a driving environment monitoring unit, data storage and data processing. The working state monitoring unit is used to monitor the operating parameters of the main diesel engine, the shaft generator, the gearbox, the generator set and the battery in real time. The navigation state monitoring unit is used to monitor the navigation parameters of the ship. The driving environment monitoring unit is used to monitor the weather conditions and seawater conditions during navigation in real time.

[0011] The driving environment monitoring unit uses an airborne weather radar, a ship meteorological instrument, a temperature-salinity-depth measuring instrument, a current velocity measuring instrument and a weather fax receiver to monitor the weather and seawater conditions during navigation in real time and predict future weather.

[0012] Preferably, the navigation status monitoring unit includes a GPS positioning device, a ship attitude detector and a liquid tank loading capacity measuring device. The ship attitude detector is used to detect the movement attitude of the ship on the water surface. The navigation speed and heading are obtained by using the ship attitude detector and the GPS positioning device in combination. The liquid tank loading capacity measuring device is used to detect the specific loading capacity of the ship.

[0013] Preferably, the working state monitoring unit includes an operating mode recognition, a diesel engine monitor, an electrical parameter monitor and a vibration analyzer;

[0014] Operation mode identification: Determine the current operation mode of the power system based on the monitoring results of the diesel engine monitor, electrical parameter monitor and vibration analyzer;

[0015] Diesel engine monitor: Use the CPU electronic measurement and control system to accurately monitor the speed, oil pressure, water temperature and oil temperature data of the main diesel engine;

[0016] Electrical parameter monitor: used to monitor the voltage, current and frequency of shaft generator, gearbox, generator set and battery in real time;

[0017] Vibration Analyzer: Used to detect and analyze vibration data of main diesel engine, shaft generator, gearbox and generator set, so as to facilitate subsequent diagnosis of equipment health status.

[0018] Preferably, the data storage includes a memory for centrally storing real-time data monitored by the working status monitoring unit, the navigation status monitoring unit and the weather condition monitoring unit to form a database, and the data processing includes data cleaning and data analysis for data integration and real-time analysis of the data in the data storage.

[0019] Preferably, the diagnostic decision system includes determination switching, status evaluation, fault diagnosis and decision making. The determination switching determines whether it is necessary to switch the power system operation mode based on the data collected by the monitoring system and the preset navigation requirements. The status evaluation evaluates the power system's working mode, main diesel engine, shaft generator, generator set and battery based on the real-time data monitored by the working status monitoring unit to determine whether they are working normally. The fault diagnosis performs fault diagnosis on abnormal power source equipment based on the results of the status evaluation to determine the cause and location of the fault. The decision making makes corresponding decisions based on the results of the status evaluation and fault diagnosis.

[0020] Preferably, the execution system includes a controller, and the controller is used to control the power system to switch to a corresponding working mode according to the decision result of the diagnosis decision system.

[0021] Preferably, the working modes of the power system are divided into PTO mode, PTI mode and PTH mode;

[0022] When the main diesel engine, shaft generator, generator set and battery are all operating normally and the weather is bad, which hinders the navigation of the ship, the decision result of the diagnostic decision system is to use the main engine mode for driving;

[0023] When the main diesel engine, shaft generator, generator set and battery are all operating normally and the weather is calm, and there is no impact on the navigation of the ship, the decision result of the diagnosis decision system is to use the PTI mode;

[0024] When the main diesel engine fails and the shaft generator, the generator set and the battery are working normally, the decision result of the diagnosis decision system is to use the PTH mode for driving;

[0025] The main diesel engine, shaft generator, generator set and battery are all working normally and the wind direction is consistent with the sailing direction, when pushing the ship forward, the decision result of the diagnostic decision system is to use the PTO mode for driving.

[0026] Preferably, the switching verification system includes effect evaluation and fault detection. The effect evaluation evaluates the switching effect based on the real-time data monitored by the monitoring system after switching to determine whether the power system has reached the expected stable state. The fault detection performs fault detection on the power source after switching based on the result of the effect evaluation to determine where the problem lies.

[0027] Preferably, the maintenance management system includes an abnormality identification unit, a management recording unit and a remote communication unit. The abnormality identification unit is used to perform real-time analysis on the monitoring data of the monitoring system, identify abnormal conditions, perform fault diagnosis, and predict potential faults based on historical data and operating trends. The management recording unit is used to record all monitoring data and maintenance activities and generate detailed reports. The remote communication unit includes a wireless communication network, which is used to transmit data to an onshore support center. Experts remotely diagnose problems and provide solutions, and the feedback is sent to the ship through the wireless communication network to improve maintenance efficiency.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The present invention monitors the driving environment in real time through airborne weather radar, ship meteorological instrument and weather fax receiver. The ship meteorological instrument monitors the current weather conditions of the voyage, and uses the airborne weather radar and weather fax receiver to predict the weather conditions at the future navigation route, providing a prediction basis for the power system operation mode selected for future ship navigation. The weather fax receiver receives the weather information released by the land-based meteorological station. By comparing the data of the two, the prediction accuracy of the weather data is increased. At the same time, the ship meteorological instrument monitors the surrounding wind speed, wind direction, air temperature and humidity data in real time when the ship is sailing, and stores the current data in the data storage to form a database, which is convenient for the subsequent maintenance management system to predict potential dangers based on historical data.

[0030] 2. The present invention collects the status and operation data of the ship's power system, basic operation information of navigation and navigation environment data in real time through the monitoring system, stores the data in the data storage to form a database, and analyzes and processes the data in real time. Then, the results of the data analysis are sent to the ship's monitoring center through the data communication system and presented in a visual manner, thereby achieving the purpose of real-time monitoring of the ship. A large amount of real-time data provides real-time and accurate information for power system switching. The system will continue to collect and analyze data to optimize the switching strategy and provide a basis for future maintenance and management.

[0031] 3. The present invention determines whether it is necessary to switch the power system working mode according to the data monitored by the monitoring system and the preset navigation requirements, wherein the preset navigation requirements include the navigation distance and the navigation duration. Once it is determined that the power system working mode needs to be switched, the status evaluation will be evaluated according to the operating parameters of the main diesel engine, shaft generator, generator set and battery in the database and the working mode of the power system to determine whether each device is working normally. Once it is evaluated that there is a device that cannot work normally, the fault diagnosis is performed on the abnormal power source equipment to determine the cause and location of the fault. After that, the decision is made according to the results of the status evaluation and fault diagnosis, and the corresponding decision is made to determine the power system working mode to be switched, so as to ensure a smooth transition of the ship power when the system automatically performs the switching operation.

[0032] 4. The present invention evaluates the switching effect according to the ship operation data monitored by the monitoring system after the switching through the effect evaluation in the switching verification system, and determines whether the ship reaches the expected stable operation state after the power system is switched. Then the fault detection is performed on the switched power source according to the result of the effect evaluation to determine the problem, so as to avoid the situation where the navigation effect of the ship still fails to reach the expected goal after switching the power system working mode, resulting in affecting the normal navigation of the ship. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a system diagram of the present invention;

[0034] Figure 2 A structural diagram of the monitoring system of the present invention;

[0035] Figure 3 The driving environment monitoring unit of the present invention is a structural diagram;

[0036] Figure 4 The navigation status monitoring unit of the present invention is a structural diagram;

[0037] Figure 5 It is a structural diagram of the working status monitoring unit of the present invention;

[0038] Figure 6 It is a structural diagram of the diagnosis decision system of the present invention;

[0039] Figure 7 This is a structural diagram of the maintenance management system of the present invention. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Embodiment 1

[0042] See also Figure 1 , Figure 2 and Figure 3 , an embodiment provided by the present invention: a multi-mode coordinated ship main and auxiliary power automatic switching system, including a monitoring system, a diagnosis and decision system, an execution system, a switching verification system, a maintenance management system and a data communication system, the monitoring system is used to collect data on the working status of the power system, the navigation status of the ship and the weather conditions in real time, the diagnosis and decision system diagnoses and makes decisions on the data monitored by the monitoring system, and determines the best switching time and method, the execution system performs the switching operation according to the diagnosis and decision results of the diagnosis and decision system, the switching verification system verifies the switching effect after the switching operation, and evaluates and records it, the maintenance management system is used to monitor and maintain the entire power system, prevent and handle possible faults, and the data communication system is used to wirelessly transmit the real-time data monitored by the monitoring system;

[0043] The monitoring system includes a working state monitoring unit, a navigation state monitoring unit, a driving environment monitoring unit, data storage and data processing. The working state monitoring unit is used to monitor the operating parameters of the main diesel engine, the shaft generator, the gearbox, the generator set and the battery in real time. The navigation state monitoring unit is used to monitor the navigation parameters of the ship. The driving environment monitoring unit is used to monitor the weather conditions and seawater conditions during navigation in real time.

[0044] The driving environment monitoring unit uses an airborne weather radar, a ship meteorological instrument, a temperature-salinity-depth measuring instrument, a current velocity measuring instrument and a weather fax receiver to monitor the weather and seawater conditions during navigation in real time and predict future weather.

[0045] Furthermore, the monitoring system is the cornerstone of the entire power switching system. The monitoring system is divided into a working status monitoring unit, a navigation status monitoring unit and a driving environment monitoring unit for monitoring information, as well as a data storage for storing real-time data and a data processing unit for integrating and analyzing real-time data. The monitoring system collects the status and operation data of the ship's power system, basic navigation operation information and navigation environment data in real time, and stores the data in the data storage to form a database, and performs real-time analysis and processing. Then, the results of the data analysis are sent to the ship's monitoring center through the data communication system and presented in a visual manner, thereby achieving the purpose of real-time monitoring of the ship. A large amount of real-time data provides real-time and accurate information for power system switching. The system will continue to collect and analyze data to optimize the switching strategy and provide a basis for future maintenance and management.

[0046] First, the driving environment monitoring unit monitors the current weather conditions of the voyage through the ship's meteorological instrument, and uses the airborne meteorological radar and meteorological fax receiver to predict the weather conditions at the future navigation route, providing a prediction basis for the power system operation mode selected for the future ship's navigation. During the ship's navigation, the airborne meteorological radar transmits a series of pulse electromagnetic waves. When the emitted pulse electromagnetic waves encounter clouds or ground targets with moisture, part of the signal is reflected back to form an echo signal, which is received by the antenna on the airborne meteorological radar. After signal processing, the meteorological conditions in the front of the ship's route and in the left and right fan-shaped areas are detected, including the distribution and rainfall of the rain area, the thickness, height and moisture content of the cloud layer, the location of the storm and its moving route. At the same time, the meteorological fax receiver will receive the meteorological information released by the land-based meteorological station. By comparing the data of the two, the prediction accuracy of the meteorological data is increased. At the same time, the ship's meteorological instrument monitors the surrounding wind speed, wind direction, air temperature and humidity data in real time when the ship is sailing, and stores the current data in the data storage to form a database, which is convenient for the subsequent maintenance management system to predict potential dangers based on historical data, realize preventive maintenance, and increase the safety of the ship.

[0047] The temperature, salinity and depth measuring instrument obtains the real-time temperature by measuring the current change of the thermistor, obtains the salinity of seawater by measuring the conductivity of seawater and adding the temperature compensation mechanism, and measures the depth to which the seawater pressure reaches. The flow meter accurately monitors the flow speed of seawater through the measuring probe. Since the temperature, salinity and water flow speed of seawater will affect the navigation speed of the ship during navigation, the monitoring of these external influencing factors and navigation needs help the diagnosis decision system to make corresponding decisions and select the appropriate operating mode.

[0048] Embodiment 2

[0049] See also Figure 4, an embodiment provided by the present invention: a multi-mode coordinated ship main and auxiliary power automatic switching system, the navigation state monitoring unit includes a GPS positioning device, a ship attitude detector and a liquid tank loading measurement device, the ship attitude detector is used to detect the movement attitude of the ship on the water surface, and the navigation speed and heading are obtained by cooperating with the ship attitude detector and the GPS positioning device, and the liquid tank loading measurement device is used to detect the specific loading amount of the ship;

[0050] The working state monitoring unit includes an operating mode recognition, a diesel engine monitor, an electrical parameter monitor and a vibration analyzer;

[0051] Operation mode identification: Determine the current operation mode of the power system based on the monitoring results of the diesel engine monitor, electrical parameter monitor and vibration analyzer;

[0052] Diesel engine monitor: Use the CPU electronic measurement and control system to accurately monitor the speed, oil pressure, water temperature and oil temperature data of the main diesel engine;

[0053] Electrical parameter monitor: used to monitor the voltage, current and frequency of shaft generator, gearbox, generator set and battery in real time;

[0054] Vibration Analyzer: Used to detect and analyze vibration data of main diesel engine, shaft generator, gearbox and generator set, so as to facilitate subsequent diagnosis of equipment health status.

[0055] Furthermore, the GPS positioning device determines the real-time position of the ship by measuring the transmission time of the satellite signal, and the ship attitude detector detects the movement attitude of the ship on the water surface. The two are used together to accurately obtain the real-time sailing speed of the ship. The tank loading measurement device obtains the loading capacity of the ship's tank according to the water pressure data detected by the detection head. The navigation status monitoring unit monitors the speed and loading information of the ship to facilitate the diagnosis and decision-making system to make decisions and select the best power system operation mode and switching time. At the same time, according to the real-time position information monitored by the GPS positioning device, the meteorological station will accurately send meteorological information to the meteorological fax receiver;

[0056] The working status monitoring unit is used to monitor the operating parameters of the main diesel engine, shaft generator, gearbox and generator set in real time. At the same time, the operating mode recognition determines the current power system working mode according to the operating parameters monitored by the diesel monitor, electrical parameter monitor and vibration analyzer. The power system working mode is specifically divided into PTO mode, PTI mode and PTH mode. The diesel engine monitor monitors and collects the main diesel engine's speed, oil pressure, water temperature and oil temperature in real time. The electrical parameter monitor monitors the working current, working voltage and operating frequency of the shaft generator, gearbox and generator set. The vibration analyzer determines the health status of each equipment by monitoring the vibration data of the main diesel engine, shaft generator, gearbox and generator set, so as to facilitate the subsequent diagnosis decision system to make response decisions for equipment failures and switch the power system.

[0057] Embodiment 3

[0058] See also Figure 1 An embodiment of the present invention is: a multi-mode coordinated ship main and auxiliary power automatic switching system, the data storage includes a memory for centrally storing real-time data monitored by a working status monitoring unit, a navigation status monitoring unit and a weather condition monitoring unit to form a database, and the data processing includes data cleaning and data analysis for data integration and real-time analysis of the data in the data storage.

[0059] Furthermore, the operating parameters monitored by the working status monitoring unit, the navigation parameters monitored by the navigation status monitoring unit, and the real-time data of the navigation surrounding environment monitored by the driving environment monitoring unit will be stored in the memory to form a database. Data cleaning will perform cleaning operations on the data in the memory to correct errors in the data. After that, data analysis will analyze and process the cleaned data to ensure the accuracy of the data in the database, so as to facilitate the subsequent diagnosis and decision-making system to diagnose and make corresponding decisions based on the processed data.

[0060] Embodiment 4

[0061] See also Figure 1 and Figure 6, an embodiment provided by the present invention: a multi-mode coordinated ship main and auxiliary power automatic switching system, the diagnosis and decision system includes judgment switching, state evaluation, fault diagnosis and decision making, the judgment switching judges whether it is necessary to switch the power system operation mode according to the data collected by the monitoring system and the preset navigation requirements, the state evaluation evaluates the working mode of the power system, the main diesel engine, the shaft generator, the generator set and the battery according to the real-time data monitored by the working state monitoring unit to judge whether they are working normally, the fault diagnosis performs fault diagnosis on the abnormal power source equipment according to the result of the state evaluation to determine the cause and location of the fault, and the decision making makes corresponding decisions according to the results of the state evaluation and the fault diagnosis;

[0062] The execution system includes a controller, which is used to control the power system to switch to a corresponding working mode according to the decision result of the diagnosis decision system;

[0063] The working modes of the power system are divided into PTO mode, PTI mode and PTH mode;

[0064] When the main diesel engine, shaft generator, generator set and battery are all operating normally and the weather is bad, which hinders the navigation of the ship, the decision result of the diagnostic decision system is to use the main engine mode for driving;

[0065] When the main diesel engine, shaft generator, generator set and battery are all operating normally and the weather is calm, and there is no impact on the navigation of the ship, the decision result of the diagnosis decision system is to use the PTI mode;

[0066] When the main diesel engine fails and the shaft generator, the generator set and the battery are working normally, the decision result of the diagnosis decision system is to use the PTH mode for driving;

[0067] The main diesel engine, shaft generator, generator set and battery are all working normally and the wind direction is consistent with the sailing direction, when pushing the ship forward, the decision result of the diagnostic decision system is to use the PTO mode for driving.

[0068] Further, after data monitoring, the switch is determined based on the data monitored by the monitoring system and the preset navigation requirements to determine whether the power system working mode needs to be switched, wherein the preset navigation requirements include the navigation distance and the navigation duration. Once it is determined that the power system working mode needs to be switched, the state evaluation will be evaluated based on the operating parameters of the main diesel engine, shaft generator, generator set and battery in the database and the working mode of the power system to determine whether each device is working normally. Once it is evaluated that there is a device that cannot work normally, the fault diagnosis is performed on the abnormal power source equipment to determine the cause and location of the fault. After that, the decision is made based on the results of the state evaluation and fault diagnosis to make a corresponding decision to determine the power system working mode to be switched to ensure a smooth transition of the ship's power when the system automatically performs the switching operation. After the switching decision is made, the controller will control the power system to switch to the corresponding working mode according to the decision result of the diagnosis decision system;

[0069] When the main diesel engine, shaft generator, generator set and battery are all working normally and the weather is bad, which hinders the navigation of the ship, the ship needs a larger propulsion force to travel at a normal speed. At this time, the decision result of the diagnosis and decision system is to use the main engine mode for driving. The main engine mode is that the main diesel engine directly drives the ship forward. When the main diesel engine, shaft generator, generator set and battery are all working normally and the weather is calm, which has no impact on the navigation of the ship, the decision result of the diagnosis and decision system is to use the PTI mode. The PTI mode is a hybrid power mode to achieve a more efficient propulsion configuration scheme. When the main diesel engine fails and the shaft generator, generator set and battery are working normally, the decision result of the diagnosis and decision system is to use the PTH mode for driving. The PTH mode is used in emergency situations to avoid the entire ship being paralyzed due to the failure of the main diesel engine, affecting the navigation of the ship. When the main diesel engine, shaft generator, generator set and battery are all working normally and the wind direction is consistent with the navigation direction, pushing the ship forward, the decision result of the diagnosis and decision system is to use the PTO mode for driving. The PTO mode can charge the battery through the shaft generator. When the system works in the PTI mode, the battery can discharge to provide energy to achieve energy saving.

[0070] Embodiment 5

[0071] See also Figure 1 and Figure 7 , an embodiment provided by the present invention: a multi-mode coordinated ship main and auxiliary power automatic switching system, the switching verification system includes effect evaluation and fault detection, the effect evaluation evaluates the switching effect according to the real-time data monitored by the monitoring system after switching, and judges whether the power system reaches the expected stable state, and the fault detection performs fault detection on the switched power source according to the result of the effect evaluation to determine the problem;

[0072] The maintenance management system includes an abnormality identification unit, a management recording unit and a remote communication unit. The abnormality identification unit is used to perform real-time analysis on the monitoring data of the monitoring system, identify abnormal conditions, and perform fault diagnosis. According to historical data and operating trends, potential faults are predicted. The management recording unit is used to record all monitoring data and maintenance activities and generate detailed reports. The remote communication unit includes a wireless communication network, which is used to transmit data to an onshore support center. Experts remotely diagnose problems and provide solutions, and feedback is sent to the ship through the wireless communication network to improve maintenance efficiency.

[0073] Furthermore, after the switching is completed, the effect evaluation in the switching verification system evaluates the switching effect according to the ship operation data monitored by the monitoring system after the switching, and determines whether the ship reaches the expected stable operation state after the power system is switched. Then, the fault detection performs fault detection on the switched power source according to the result of the effect evaluation to determine the problem, so as to avoid the situation where the navigation effect of the ship still fails to reach the expected goal after the power system working mode is switched, which affects the normal navigation of the ship.

[0074] During the voyage of the ship, the maintenance management system continuously monitors and maintains the entire power system of the ship, prevents and handles possible faults. The abnormality identification unit conducts real-time analysis of the monitoring data of the monitoring system, identifies abnormal conditions, and performs fault diagnosis, which helps to promptly discover and handle problems and avoid potential safety accidents. Based on historical data and operating trends, potential faults and maintenance needs are predicted to achieve preventive maintenance, which helps to reduce maintenance costs and improve equipment availability. When a fault is diagnosed, the wireless communication network transmits the real-time data detected by the monitoring system to the support center on shore. Experts remotely diagnose the problem and propose solutions to improve maintenance efficiency. At the same time, the management recording unit records all monitoring data and maintenance activities and produces detailed reports.

[0075] Working principle: The monitoring system collects the status and operation data of the ship's power system, basic operation information of navigation and navigation environment data in real time, and stores the data in the data storage to form a database, and analyzes and processes it in real time, and then sends the results of the data analysis to the ship's monitoring center through the data communication system in a visual way, so as to achieve the purpose of real-time monitoring of the ship. A large amount of real-time data provides real-time and accurate information for the power system switching. The system will continue to collect and analyze data to optimize the switching strategy and provide a basis for future maintenance and management. The real-time data is stored in the memory, and the data in the memory is cleaned to correct the errors in the data to form a database. The switching is determined based on the data monitored by the monitoring system and the preset navigation requirements. Whether the power system working mode needs to be switched, once it is evaluated that there is equipment that cannot work normally, the fault diagnosis performs fault diagnosis on the abnormal power source equipment to determine the cause and location of the fault, and then the decision-making is based on the results of the status evaluation and fault diagnosis. Make corresponding decisions to determine the power system working mode to be switched, as well as the specific method and timing of the switch;

[0076] After making a switching decision, the controller will control the power system to switch to the corresponding working mode according to the decision results of the diagnostic decision system. After the switching is completed, the effect evaluation in the switching verification system will evaluate the switching effect according to the ship operation data monitored by the monitoring system after the switching, and judge whether the ship has reached the expected stable operation state after the power system is switched. The fault detection will perform fault detection on the switched power source according to the results of the effect evaluation to determine the problem. The maintenance management system continuously monitors and maintains the entire power system of the ship, prevents and handles possible faults, helps to discover and handle problems in a timely manner, avoid potential safety accidents, and predicts potential faults and maintenance needs based on historical data and operating trends, thereby achieving preventive maintenance, which helps to reduce maintenance costs and improve equipment availability.

[0077] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A multi-mode coordinated ship main and auxiliary power automatic switching system, characterized by: It includes a monitoring system, a diagnosis and decision system, an execution system, a switching verification system, a maintenance management system and a data communication system. The monitoring system is used to collect data on the working status of the power system, the navigation status of the ship and the weather conditions in real time. The diagnosis and decision system diagnoses and makes decisions on the data monitored by the monitoring system to determine the best switching time and method. The execution system performs the switching operation according to the diagnosis and decision results of the diagnosis and decision system. The switching verification system verifies the switching effect after the switching operation, and evaluates and records it. The maintenance management system is used to monitor and maintain the entire power system, prevent and handle possible faults, and the data communication system is used to wirelessly transmit the real-time data monitored by the monitoring system; The monitoring system includes a working state monitoring unit, a navigation state monitoring unit, a driving environment monitoring unit, data storage and data processing. The working state monitoring unit is used to monitor the operating parameters of the main diesel engine, the shaft generator, the gearbox, the generator set and the battery in real time. The navigation state monitoring unit is used to monitor the navigation parameters of the ship. The driving environment monitoring unit is used to monitor the weather conditions and seawater conditions during navigation in real time. The driving environment monitoring unit uses an airborne weather radar, a ship meteorological instrument, a temperature-salinity-depth measuring instrument, a current velocity measuring instrument and a weather fax receiver to monitor the weather and seawater conditions during navigation in real time and predict future weather.

2. A multi-mode coordinated ship main and auxiliary power automatic switching system according to claim 1, characterized in that: The navigation status monitoring unit includes a GPS positioning device, a ship attitude detector and a liquid tank loading capacity measuring device. The ship attitude detector is used to detect the movement attitude of the ship on the water surface. The navigation speed and heading are obtained by using the ship attitude detector and the GPS positioning device in combination. The liquid tank loading capacity measuring device is used to detect the specific loading capacity of the ship.

3. A multi-mode coordinated ship main and auxiliary power automatic switching system according to claim 1, characterized in that: The working state monitoring unit includes an operating mode recognition, a diesel engine monitor, an electrical parameter monitor and a vibration analyzer; Operation mode identification: Determine the current operation mode of the power system based on the monitoring results of the diesel engine monitor, electrical parameter monitor and vibration analyzer; Diesel engine monitor: uses the CPU electronic measurement and control system to accurately monitor the speed, oil pressure, water temperature and oil temperature data of the main diesel engine; Electrical parameter monitor: used to monitor the voltage, current and frequency of shaft generator, gearbox, generator set and battery in real time; Vibration Analyzer: Used to detect and analyze vibration data of main diesel engine, shaft generator, gearbox and generator set, so as to facilitate subsequent diagnosis of equipment health status.

4. A multi-mode coordinated ship main and auxiliary power automatic switching system according to claim 1, characterized in that: The data storage includes a memory for centrally storing real-time data monitored by a working status monitoring unit, a navigation status monitoring unit and a weather condition monitoring unit to form a database. The data processing includes data cleaning and data analysis for integrating and analyzing the data in the data storage in real time.

5. According to claim 1, a multi-mode coordinated ship main and auxiliary power automatic switching system is characterized by: The diagnostic decision system includes judgment switching, state evaluation, fault diagnosis and decision making. The judgment switching determines whether it is necessary to switch the power system operation mode based on the data collected by the monitoring system and the preset navigation requirements. The state evaluation evaluates the power system's working mode, main diesel engine, shaft generator, generator set and battery based on the real-time data monitored by the working state monitoring unit to determine whether they are working normally. The fault diagnosis performs fault diagnosis on abnormal power source equipment based on the results of the state evaluation to determine the cause and location of the fault. The decision making makes corresponding decisions based on the results of the state evaluation and fault diagnosis.

6. A multi-mode coordinated ship main and auxiliary power automatic switching system according to claim 1, characterized in that: The execution system includes a controller, and the controller is used to control the power system to switch to a corresponding working mode according to the decision result of the diagnosis decision system.

7. A multi-mode coordinated ship main and auxiliary power automatic switching system according to claim 5, characterized in that: The working modes of the power system are divided into PTO mode, PTI mode and PTH mode; When the main diesel engine, shaft generator, generator set and battery are all operating normally and the weather is bad, which hinders the navigation of the ship, the decision result of the diagnostic decision system is to use the main engine mode for driving; When the main diesel engine, shaft generator, generator set and battery are all operating normally and the weather is calm, and there is no impact on the navigation of the ship, the decision result of the diagnosis decision system is to use the PTI mode; When the main diesel engine fails and the shaft generator, the generator set and the battery are working normally, the decision result of the diagnosis decision system is to use the PTH mode for driving; The main diesel engine, shaft generator, generator set and battery are all working normally and the wind direction is consistent with the sailing direction, when pushing the ship forward, the decision result of the diagnostic decision system is to use the PTO mode for driving.

8. A multi-mode coordinated ship main and auxiliary power automatic switching system according to claim 1, characterized in that: The switching verification system includes effect evaluation and fault detection. The effect evaluation evaluates the switching effect based on the real-time data monitored by the monitoring system after switching to determine whether the power system has reached the expected stable state. The fault detection performs fault detection on the power source after switching based on the result of the effect evaluation to determine where the problem lies.

9. A multi-mode coordinated ship main and auxiliary power automatic switching system according to claim 1, characterized in that: The maintenance management system includes an abnormality identification unit, a management recording unit and a remote communication unit. The abnormality identification unit is used to perform real-time analysis on the monitoring data of the monitoring system, identify abnormal conditions, and perform fault diagnosis. According to historical data and operating trends, potential faults are predicted. The management recording unit is used to record all monitoring data and maintenance activities and generate detailed reports. The remote communication unit includes a wireless communication network, which is used to transmit data to an onshore support center. Experts remotely diagnose problems and provide solutions, and feedback is sent to the ship through the wireless communication network to improve maintenance efficiency.

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