On-line monitoring system for ship lubricating oil

Abstract

The utility model discloses an on-line monitoring system for ship lubricating oil, relates to the technical field of ship monitoring, and aims to solve the problems that the off-line detection period is long, data cannot reflect the quality of the lubricating oil in real time, physicochemical indexes cannot be associated with the actual operation condition of a unit for analysis, the data processing and transmission capabilities are limited, and the detection efficiency is low in the current ship lubricating oil detection. The device comprises a device shell, an oil scavenger pump, a particle and physicochemical index analysis module, a signal acquisition module, a power supply module, a network communication module and embedded software, and an installation fixing nut is arranged in the device shell. The system can reflect the actual quality and state of the lubricating oil in time, so that a ship operator can master the change condition of the lubricating oil in real time, the operation state of a ship diesel engine is accurately evaluated and adjusted in time, and the problem that the lubricating oil is not detected in time in the prior art is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of ship monitoring technology, and more specifically, to a ship lubricating oil online monitoring system. Background Technology

[0002] During ship operation, the lubricating oil in marine diesel engines plays a crucial role in ensuring the normal operation of the equipment. Lubricating oil not only reduces friction and wear between components, but also dissipates heat, prevents corrosion, and seals gaps. Therefore, timely and accurate monitoring of the quality and condition of the lubricating oil is of great significance for assessing the health of marine diesel engines, preventing malfunctions, and ensuring the safe and reliable operation of the ship.

[0003] Currently, most existing marine lubricating oil testing systems employ offline sampling and testing methods. This method requires manual collection of lubricating oil samples from the marine diesel engine's lubricating oil system at regular intervals and delivery to a laboratory for analysis. However, this offline testing method has several drawbacks. Firstly, the testing cycle is long; the time required from sampling to obtaining analysis results means that the obtained analytical data cannot reflect the actual quality and condition of the lubricating oil in real time. During this period, the quality of the lubricating oil may have changed, but the ship's operators cannot be aware of this in time, making it difficult to accurately assess and promptly adjust the operating status of the marine diesel engine. Secondly, the physicochemical indicators obtained from offline analysis are difficult to correlate with the actual operating conditions of the marine diesel engine. Under different operating conditions, the performance and condition of the lubricating oil are affected by various factors, such as load, speed, and temperature. Offline testing cannot obtain this operating condition information in real time, making it impossible to effectively analyze the lubricating oil condition under different operating conditions, thus hindering the early detection of potential faults.

[0004] Furthermore, existing lubricating oil testing systems also have shortcomings in data processing and transmission. Due to the lack of real-time monitoring and online analysis capabilities, they cannot transmit lubricating oil testing data to the ship's monitoring center or remote management platform in a timely manner. This prevents ship management personnel from grasping the changes in lubricating oil quality and the operating status of the ship's diesel engine in real time, making it difficult to make timely and scientifically sound decisions.

[0005] In summary, existing ship lubricating oil detection systems suffer from problems such as untimely detection, inability to correlate with actual operating conditions, and insufficient data processing and transmission capabilities. There is an urgent need for an online monitoring system that can monitor the lubricating oil status in real time and accurately, and integrate it with the actual operating conditions of the ship's diesel engine. Therefore, we propose a ship lubricating oil online monitoring system. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide an online monitoring system for ship lubricating oil. This system addresses the technical problems in current ship lubricating oil testing, such as long offline testing cycles, inability of data to reflect lubricating oil quality in real time, inability to correlate physicochemical indicators with the actual operating conditions of the unit, and limited data processing and transmission capabilities, which make it difficult to meet the needs of equipment health monitoring and fault prediction.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an online monitoring system for ship lubricating oil, comprising a device housing, a return oil pump, a particle and physicochemical index analysis module, a signal acquisition module, a power supply module, a network communication module, and embedded software;

[0008] The device housing is equipped with a mounting nut inside, and the device housing is provided with an oil inlet, an oil outlet, a power supply interface, and a communication interface.

[0009] The oil return pump, particle and physicochemical index analysis module, signal acquisition module, network communication module and power supply module are all fixedly connected to the device housing by nuts;

[0010] The inlet of the return oil pump is connected to the oil inlet of the device via an oil pipe, and the outlet of the return oil pump is connected to the inlet of the particle and physicochemical index analysis module via an oil pipe.

[0011] The outlet of the particle and physicochemical index analysis module is connected to the oil outlet of the device through an oil pipe, and the particle and physicochemical index analysis module is connected to the power module through a cable. The particle and physicochemical index analysis module is also connected to the signal acquisition module through an acquisition cable.

[0012] The signal acquisition module is connected to the network communication module via a network cable, and the network communication module is connected to the communication interface of the device via a network cable.

[0013] This invention adopts an integrated design concept, using a return oil pump to deliver lubricating oil in real time to the particle and physicochemical index analysis module for detection, realizing real-time measurement, collection, analysis, and processing of lubricating oil indicators. Compared with traditional offline detection methods, this system can promptly reflect the actual quality and state of the lubricating oil, enabling ship operators to monitor changes in the lubricating oil in real time, thereby accurately assessing and promptly adjusting the operating status of the ship's diesel engine, effectively solving the problem of untimely lubricating oil detection in existing technologies.

[0014] Preferably, the particle and physicochemical index analysis module includes a particle sensor and a physicochemical sensor;

[0015] The particle sensor integrates a high-precision signal sampling and processing unit. The inlet of the particle sensor is connected to the outlet of the return oil pump through an oil pipe, and the outlet of the particle sensor is connected to the inlet of the physicochemical sensor through an oil pipe.

[0016] The physicochemical sensor integrates a high-precision signal sampling and processing unit, and the outlet of the physicochemical sensor is connected to the oil outlet of the device through an oil pipe.

[0017] Preferably, the signal acquisition module is connected to the particle sensor and the physicochemical sensor via an acquisition cable, and the signal acquisition module includes a high-speed AD circuit, a conditioning and filtering circuit, a core MUC, and peripherals, wherein the peripherals are SD cards.

[0018] Preferably, the core MUC is a central processing circuit, which adopts a 32-bit ARM processor, and the ARM processor is connected to the particle sensor and the physicochemical sensor through a data acquisition cable, and the embedded software runs in the ARM processor.

[0019] Preferably, the network communication module includes data transmission hardware, the network communication module is connected to the signal acquisition module via a network cable, and the network communication module is connected to the communication interface of the device via a network cable.

[0020] Preferably, the power supply module includes a power supply voltage regulator module and a DC linear voltage regulator module, and the power supply module is connected to the oil return pump, particle sensor, physicochemical sensor and signal acquisition module via cables.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. This utility model adopts an integrated design concept, using a return oil pump to deliver lubricating oil in real time to the particle and physicochemical index analysis module for detection, realizing real-time measurement, collection, analysis, and processing of lubricating oil indicators. Compared with traditional offline detection methods, this system can promptly reflect the actual quality and state of the lubricating oil, enabling ship operators to monitor changes in the lubricating oil in real time, thereby accurately assessing and promptly adjusting the operating status of the ship's diesel engine, effectively solving the problem of untimely lubricating oil detection in existing technologies.

[0023] 2. This invention also collects measurement data from particle sensors and physicochemical sensors via a signal acquisition module, and combines this data with actual operating condition information of the marine diesel engine, using embedded software for data fusion and analysis. This allows for the acquisition of the phased evolution patterns of lubrication failure, abnormal wear, and abnormal gear contact characteristics under different operating conditions of the marine diesel engine, providing strong data support for health monitoring and fault prediction. This further solves the problem in existing technologies where lubricating oil detection indicators are difficult to correlate with actual operating conditions, helping to detect potential faults in advance and improving the safety and reliability of ship operation.

[0024] 3. This invention also utilizes a 32-bit ARM processor in the core MUC of the signal acquisition module, possessing powerful data processing capabilities and enabling rapid analysis and processing of the acquired lubricating oil detection data. Simultaneously, the network communication module can implement different network topologies such as star, chain, or tree, responsible for packaging and transmitting the acquired signals, facilitating the timely transmission of lubricating oil detection data to the ship's monitoring center or remote management platform. This allows ship management personnel to monitor real-time changes in lubricating oil quality and the operating status of the ship's diesel engine, enabling timely and informed decision-making, further enhancing the system's data processing and transmission capabilities, and overcoming the shortcomings of existing technologies in this regard. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the lubricating oil detection system of this utility model;

[0026] Figure 2 This is a schematic diagram of the lubricating oil detection system in this utility model.

[0027] Explanation of the labels in the diagram:

[0028] 1. Oil inlet of the device; 2. Oil return pump; 3. Particle sensor; 4. Physicochemical sensor; 5. Oil outlet of the device; 6. Signal acquisition module; 7. Power supply module; 8. Network communication module; 9. Power supply interface of the device; 10. Communication interface of the device. Detailed Implementation

[0029] like Figure 1 , Figure 2 As shown, the present invention relates to an online monitoring system for ship lubricating oil, comprising a device housing, a return oil pump 2, a particle and physicochemical index analysis module, a signal acquisition module 6, a power supply module 7, a network communication module 8, and embedded software;

[0030] The device housing is equipped with a mounting and fixing nut inside, and the device housing is provided with a device oil inlet 1, a device oil outlet 5, a device power supply interface 9, and a device communication interface 10.

[0031] The return oil pump 2, particle and physicochemical index analysis module, signal acquisition module 6, network communication module 8, and power supply module 7 are all fixedly connected to the device housing by nuts.

[0032] The inlet of the return oil pump 2 is connected to the oil inlet 1 of the device via an oil pipe, and the outlet of the return oil pump 2 is connected to the inlet of the particle and physicochemical index analysis module via an oil pipe.

[0033] The outlet of the particle and physicochemical index analysis module is connected to the oil outlet 5 of the device through an oil pipe, and the particle and physicochemical index analysis module is connected to the power module 7 through a cable. The particle and physicochemical index analysis module is also connected to the signal acquisition module 6 through an acquisition cable.

[0034] The signal acquisition module 6 is connected to the network communication module 8 via a network cable, and the network communication module 8 is connected to the device communication interface 10 via a network cable.

[0035] This invention adopts an integrated design concept, using a return oil pump 2 to deliver lubricating oil in real time to a particle and physicochemical index analysis module for detection, thus realizing real-time measurement, collection, analysis, and processing of lubricating oil indicators. Compared with traditional offline detection methods, this system can promptly reflect the actual quality and state of the lubricating oil, enabling ship operators to monitor changes in the lubricating oil in real time. This allows for accurate assessment and timely adjustment of the ship's diesel engine operating status, effectively solving the problem of untimely lubricating oil detection in existing technologies.

[0036] In an embodiment of this utility model, the particle and physicochemical index analysis module includes a particle sensor 3 and a physicochemical sensor 4;

[0037] The particle sensor 3 is based on the principle of three-coil electromagnetic induction, and integrates a high-precision signal sampling and processing unit. Combined with the built-in algorithm, it can detect the ferromagnetic and non-ferromagnetic abrasive particles in the oil circuit in real time. The inlet of the particle sensor 3 is connected to the outlet of the return oil pump 2 through an oil pipe, and the outlet of the particle sensor 3 is connected to the inlet of the physicochemical sensor 4 through an oil pipe.

[0038] The physical and chemical sensor 4 uses a piezoelectric resonant MEMS element. Through the internally integrated high-precision signal sampling and processing unit, combined with the built-in algorithm, it can automatically detect six physical and chemical indicators of the liquid in real time: water content, density, viscosity, dielectric constant, water activity, and temperature. The outlet of the physical and chemical sensor 4 is connected to the oil outlet 5 of the device through an oil pipe.

[0039] In an embodiment of this utility model, the signal acquisition module 6 is connected to the particle sensor 3 and the physicochemical sensor 4 via acquisition cables, and the signal acquisition module 6 includes a high-speed AD circuit, a conditioning and filtering circuit, a core MUC, and peripherals.

[0040] The high-speed AD circuit is used to convert the analog signal output by the sensor into a digital signal;

[0041] The conditioning and filtering circuit is used to filter, amplify, and process signals to improve signal quality.

[0042] Measurement data from particle sensor 3 and physicochemical sensor 4 are collected by signal acquisition module 6 and combined with actual operating condition information of the marine diesel engine. Embedded software is then used for data fusion and analysis. This allows for the acquisition of the phased evolution patterns of lubrication failure, abnormal wear, and abnormal gear contact characteristics under different operating conditions of the marine diesel engine, providing strong data support for health monitoring and fault prediction. This further solves the problem in existing technologies where lubricating oil detection indicators are difficult to correlate with actual operating conditions, helping to detect potential faults in advance and improving the safety and reliability of ship operation.

[0043] In the embodiments of this utility model, the core MUC is a central processing circuit, which adopts a 32-bit ARM processor. The ARM processor is a Cortex-M3 core, with a typical model being STM32F103RCT6. The ARM processor is connected to the particle sensor 3 and the physicochemical sensor 4 through a data acquisition cable, and is used to acquire, analyze, and process the measurement data of the particle sensor 3 and the physicochemical sensor 4.

[0044] The core MUC in signal acquisition module 6 employs a 32-bit ARM processor, possessing powerful data processing capabilities that enable rapid analysis and processing of acquired lubricating oil detection data. Simultaneously, network communication module 8 supports various network topologies such as star, chain, or tree, responsible for packaging and transmitting acquired signals. This facilitates the timely transmission of lubricating oil detection data to the ship's monitoring center or remote management platform. This allows ship management personnel to monitor real-time changes in lubricating oil quality and the operating status of the ship's diesel engines, enabling timely and informed decision-making. Furthermore, it enhances the system's data processing and transmission capabilities, overcoming the shortcomings of existing technologies in this area.

[0045] In an embodiment of this utility model, the external device is an SD card, the type of SD card is SDHC, full speed 25MB / s, storage capacity 200GB, used to store collected data, and can be traced back according to a specified time period.

[0046] In an embodiment of this utility model, the network communication module 8 includes data transmission hardware, which is responsible for packaging and transmitting the collected signals for upper-level analysis and decision-making. The network communication module 8 is connected to the signal acquisition module 6 via a network cable, and the network communication module 8 is connected to the device communication interface 10 via a network cable.

[0047] The network communication module 8 can realize different topology networking methods such as star, chain or tree to simplify the distributed measurement work of the system.

[0048] In this embodiment of the present invention, the power module 7 includes a power supply regulator module and a DC linear regulator module, which are used to provide power supply protection for the entire device, ensure that the EMC design of the system meets the requirements, and ensure that the equipment operates stably in a complex electromagnetic environment. The power module 7 is connected to the oil return pump 2, the particle sensor 3, the physicochemical sensor 4, and the signal acquisition module 6 via cables.

[0049] In an embodiment of this utility model, the embedded software runs within an ARM processor and uses a lightweight in-memory database, SQLite, to coordinate and control various modules of the system, enabling data storage management and interaction with the hardware.

[0050] Working Principle: This embodiment provides a marine lubricating oil online monitoring system, mainly composed of a device housing, a return oil pump 2, a particle and physicochemical index analysis module, a signal acquisition module 6, a power supply module 7, a network communication module 8, and embedded software. These components work together to achieve real-time online monitoring of marine lubricating oil. Its specific working principle is as follows:

[0051] Lubricating oil delivery stage

[0052] Ship lubricating oil enters the system through the inlet 1 of the device. The return pump 2 starts working, drawing the lubricating oil from the inlet 1 of the device and delivering the lubricating oil to the particle and physicochemical index analysis module for testing.

[0053] Indicator testing phase

[0054] Particle sensor detection: The particle and physicochemical index analysis module includes a particle sensor 3 and a physicochemical sensor 4. Lubricating oil first enters the particle sensor 3. When abrasive particles in the lubricating oil pass through the sensor's detection area, they cause changes in the magnetic field within the coil. The high-precision signal sampling and processing unit integrated inside the sensor captures these magnetic field changes and analyzes and processes the signals using built-in algorithms, thereby detecting in real time the indices of ferromagnetic and non-ferromagnetic abrasive particles in the oil circuit, such as particle size, quantity, and concentration.

[0055] Physicochemical sensor 4 detection: After being detected by particle sensor 3, the lubricating oil then enters physicochemical sensor 4. When the lubricating oil comes into contact with the piezoelectric resonant MEMS element, the physical and chemical properties of the lubricating oil will affect the resonant characteristics of the element. The high-precision signal sampling and processing unit inside the sensor will collect the change signal of the element's resonant characteristics and analyze it in combination with the built-in algorithm, thereby automatically detecting the six physicochemical indicators of the lubricating oil in real time.

[0056] Data acquisition and processing stage

[0057] Data Acquisition: The particle sensor 3 and physicochemical sensor 4 output the detected lubricating oil parameters as analog signals to the signal acquisition module 6. The high-speed AD circuit in the module converts the analog signals output by the sensors into digital signals. The conditioning and filtering circuit filters and amplifies the converted digital signals to remove noise and interference, thereby improving the signal quality and stability.

[0058] Data Processing: The core MUC of the signal acquisition module 6 uses a 32-bit ARM processor as its central processing circuit. It receives conditioned and filtered digital signals and performs acquisition, analysis, and processing on these signals. Embedded software runs within the ARM processor, utilizing the lightweight in-memory database SQLite for data storage and management. Based on preset algorithms and rules, the processor analyzes and evaluates various indicators of the lubricating oil to determine its quality and the operational status of the ship's equipment. Simultaneously, the processor can compare and analyze data from different time periods to identify trends in lubricating oil indicators, providing a basis for equipment fault prediction.

[0059] Data transmission and decision-making stage

[0060] Data transmission: The data processed by the signal acquisition module 6 is transmitted to the network communication module 8 via a network cable. The network communication module 8 includes data transmission hardware, which packages the acquired lubricating oil monitoring data and transmits it to the ship's monitoring center or remote management platform via a network cable connected to the device communication interface 10. The network communication module 8 can implement different topology networking methods such as star, chain, or tree to adapt to different ship monitoring system architectures, simplify distributed measurement work, and ensure efficient and stable data transmission.

[0061] Decision Support: After receiving lubricating oil monitoring data, the ship's monitoring center or remote management platform allows managers to view various lubricating oil indicators and equipment operating status in real time. Through further data analysis and processing, combined with historical operating data and maintenance records of the ship's equipment, managers can promptly identify lubricating oil quality anomalies and potential equipment malfunctions, and make corresponding decisions. For example, when the concentration of abrasive particles in the lubricating oil exceeds a preset threshold, it indicates a potential problem of accelerated equipment wear, requiring timely inspection and maintenance; when the physicochemical properties of the lubricating oil do not meet requirements, it suggests the need to replace the lubricating oil or take other measures to improve its performance.

[0062] Power supply and protection phase

[0063] The power module 7 includes a power regulator module and a DC linear regulator module, which are connected to the device's power supply interface 9 via cables, thus providing a stable power supply to the return oil pump 2, particle sensor 3, physicochemical sensor 4, and signal acquisition module 6. Simultaneously, the power module 7 also has power supply protection functions, ensuring that the system's EMC electromagnetic compatibility design meets requirements and can effectively resist interference from the complex electromagnetic environment of the ship, ensuring stable operation of the equipment under various harsh conditions. The lubricating oil after testing flows out of the system from the device's oil outlet 5 and can be returned to the ship's lubricating oil system for continued recycling.

[0064] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. An on-line monitoring system for lubricating oil of a marine vessel, characterized in that The device shell is internally provided with a mounting and fixing nut, and is provided with a device oil inlet (1), a device oil outlet (5), a device power supply interface (9) and a device communication interface (10) on the device shell. The oil return pump (2), the particle and physicochemical index analysis module, the signal acquisition module (6), the network communication module (8) and the power module (7) are all fixedly connected with the device shell through the nut. The inlet of the oil return pump (2) is connected with the device oil inlet (1) through an oil pipe, and the outlet of the oil return pump (2) is connected with the inlet of the particle and physicochemical index analysis module through an oil pipe. The outlet of the particle and physicochemical index analysis module is connected with the device oil outlet (5) through an oil pipe, and the particle and physicochemical index analysis module is connected with the power module (7) through a cable, and the particle and physicochemical index analysis module is connected with the signal acquisition module (6) through an acquisition cable. The signal acquisition module (6) is connected with the network communication module (8) through a network cable, and the network communication module (8) is connected with the device communication interface (10) through a network cable. The particle and physicochemical index analysis module comprises a particle sensor (3) and a physicochemical sensor (4).

2. An on-line monitoring system for lubricating oil of a marine vessel according to claim 1, characterized in that, The particle sensor (3) is internally integrated with a high-precision signal sampling and processing unit, the inlet of the particle sensor (3) is connected with the outlet of the oil return pump (2) through an oil pipe, and the outlet of the particle sensor (3) is connected with the inlet of the physicochemical sensor (4) through an oil pipe. The physicochemical sensor (4) is internally integrated with a high-precision signal sampling and processing unit, and the outlet of the physicochemical sensor (4) is connected with the device oil outlet (5) through an oil pipe. The signal acquisition module (6) is connected with the particle sensor (3) and the physicochemical sensor (4) through an acquisition cable, and the signal acquisition module (6) comprises a high-speed AD circuit, a conditioning filter circuit, a core MUC and a peripheral device, and the peripheral device is an SD card.

3. An on-line monitoring system for lubricating oil of a marine vessel according to claim 2, characterized in that, The core MUC is a central processing circuit, adopts a 32-bit ARM processor, and the ARM processor is connected with the particle sensor (3) and the physicochemical sensor (4) through an acquisition cable, and the embedded software runs in the ARM processor.

4. An on-line monitoring system for lubricating oil of a marine vessel according to claim 3, characterized in that, The network communication module (8) comprises data transmission hardware, the network communication module (8) is connected with the signal acquisition module (6) through a network cable, and the network communication module (8) is connected with the device communication interface (10) through a network cable.

5. An on-line monitoring system for lubricating oil of a marine vessel according to claim 1, characterized in that, The power module (7) comprises a power stabilizing module and a direct current linear stabilizing module, and the power module (7) is connected with the oil return pump (2), the particle sensor (3), the physicochemical sensor (4) and the signal acquisition module (6) through a cable.

6. An on-line monitoring system for lubricating oil of a marine vessel according to claim 1, characterized in that, ​

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