CN111238598A - Automatic measurement system and measurement method for fuel oil storage amount of ship oil tank - Google Patents
Automatic measurement system and measurement method for fuel oil storage amount of ship oil tank Download PDFInfo
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- CN111238598A CN111238598A CN202010119343.5A CN202010119343A CN111238598A CN 111238598 A CN111238598 A CN 111238598A CN 202010119343 A CN202010119343 A CN 202010119343A CN 111238598 A CN111238598 A CN 111238598A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
- G01F22/02—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for involving measurement of pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/0007—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm for discrete indicating and measuring
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/296—Acoustic waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
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Abstract
The automatic measuring system comprises a data acquisition device, a data processing module and a central processing unit which are sequentially connected, wherein the data acquisition device comprises a plurality of groups of liquid level sensor groups which are arranged at different height positions on the side surface of a fuel tank or a fuel cabinet at the same height, an inclination angle sensor arranged on the fuel tank or the fuel cabinet, a pressure sensor arranged at the bottom of the fuel tank or the fuel cabinet and temperature sensors uniformly arranged in the fuel tank or the fuel cabinet, the data acquisition device is used for acquiring sensing data, the data processing module is used for acquiring liquid level data, an inclination angle, temperature and pressure according to the sensing data acquired by the data acquisition device and transmitting the liquid level data, the inclination angle, the temperature and the pressure to the central processing unit, and the central processing unit calculates the fuel storage amount of the fuel tank or the fuel cabinet according to the received data fusion. Based on comprehensive measurement and data calculation of various sensors, the device can replace manual oil metering work, and automatically measure the storage capacity of a ship fuel oil tank and an oil tank.
Description
Technical Field
The disclosure relates to the technical field of ship fuel oil automatic measurement, in particular to an automatic measurement system and method for ship oil tank fuel oil reserve.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The fuel oil types of ships using burning fuel oil as a power source generally include two types, namely marine fuel oil (commonly known as heavy oil) and common diesel oil (commonly known as light oil). Ships often employ multiple tanks, chests, to store fuel.
The measurement and recording of the reserves of the light and heavy oil tanks (and oil tanks) are one of the important daily works of personnel on the ship, and a plan for refueling the ship can be made according to the measurement result, so that fuel oil is replenished for the ship in time, and the measurement accuracy influences the safe navigation of the ship. Generally, the method of measuring the reserves of the cargo tanks is: when a ship is berthed, a crew member adopts a fuel measuring hammer to place the fuel measuring hammer into the oil tank through the fuel measuring hole, the height of the liquid level of fuel in the tank is obtained according to the measurement of the fuel measuring hammer, and the fuel storage in the tank is obtained by inquiring the tank capacity table of the ship. Meanwhile, if the ship has trim or list, the final fuel reserve result is adjusted and calculated according to the trim or list according to the cabin capacity table. The method for measuring the storage capacity of the daily oil tank is characterized in that a crew reads the data of a liquid level scale of the daily oil tank and converts the data into the capacity according to a tank capacity table of the oil tank. The inventor finds that most of the existing measurement methods depend on manpower, cannot realize real-time automatic measurement, and cause waste of human resources. The method for obtaining the capacity through inquiring the ship cabin capacity table is characterized in that the cabin capacity table is established according to the ideal size of a certain type of cabin, the sizes of different ships are not necessarily completely consistent, the measurement precision is related to the quality of personnel, different measurement personnel and measurement tools have large measurement errors, and the accuracy of the obtained capacity measurement method is low.
Disclosure of Invention
The automatic measuring system and the automatic measuring method for the fuel oil storage amount of the ship oil tank are provided for solving the problems, and the automatic measuring system and the automatic measuring method can replace manual oil measuring work and automatically measure the storage amount of the ship fuel oil tank and the oil tank based on comprehensive measurement and data calculation of various sensors. The method can dynamically measure in real time, and does not need to wait for the ship to be berthed in a manual mode, so that data guarantee is provided for realizing fine management of fuel storage. The method improves the working efficiency and reliability of fuel oil measurement through an automatic technology, and guarantees the accuracy of the measurement result.
In order to achieve the purpose, the following technical scheme is adopted in the disclosure:
one or more embodiments provide an automatic measurement system for fuel storage of a ship oil tank, which comprises a data acquisition device, a data processing module and a central processing unit which are sequentially connected, wherein the data acquisition device comprises a plurality of groups of liquid level sensor groups which are arranged at different height positions on the side surface of a fuel tank or a fuel cabinet in an equal height mode, an inclination angle sensor arranged on the fuel tank or the fuel cabinet, a pressure sensor arranged at the bottom of the fuel tank or the fuel cabinet and temperature sensors uniformly arranged in the fuel tank or the fuel cabinet, the data acquisition device is used for acquiring sensing data, the data processing module is used for acquiring liquid level data, an inclination angle, temperature and pressure according to the sensing data acquired by the data acquisition device and transmitting the liquid level data, the inclination angle, the temperature and the pressure to the central processing unit, and the central processing unit calculates the fuel storage of the fuel tank or the fuel cabinet according to the received data.
One or more embodiments provide a method for automatically measuring the fuel reserve of a ship oil tank, which comprises the following steps:
acquiring temperature data in a fuel tank or a fuel cabinet, and acquiring corrected fuel density data according to the temperature data and the fuel density;
acquiring liquid level height data of ultrasonic detection of a fuel tank or a fuel cabinet, a plurality of liquid level data measured by a liquid level sensor and an inclination angle;
establishing a neural network model for identifying the volume of the fuel tank or the fuel cabinet, and inputting liquid level height data, liquid level data and an inclination angle corresponding to the fuel tank or the fuel cabinet into the trained neural network model to obtain the volume of fuel in the fuel tank or the fuel cabinet;
and calculating the fuel reserves according to the acquired fuel density data and the acquired fuel volume data.
Compared with the prior art, the beneficial effect of this disclosure is:
(1) the method can replace manual oil measuring work and automatically measure the storage capacity of the ship fuel oil tank and the oil tank based on comprehensive measurement and data calculation of various sensors.
(2) According to the liquid level sensor, the liquid level height difference between the side face and the opposite face of the side face can be obtained through the liquid level sensors arranged at equal heights, and the data of the inclination angle sensor can be assisted to determine the inclination angle and the inclination direction; the volume of fuel can be accurately determined when the shape of the fuel tank or the fuel tank is irregular. The multi-point measurement of temperature data allows the temperature distribution throughout the fuel tank or tank to be obtained, thereby determining the density distribution within the fuel tank or tank.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and not to limit the disclosure.
FIG. 1 is a block diagram of a system in accordance with one or more embodiments;
FIG. 2 is a block diagram of a data collection end of an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of a measurement method of an embodiment of the disclosure;
wherein: 1. ultrasonic sensor, 2, level sensor, 3, differential pressure sensor, 4, pressure sensor.
The specific implementation mode is as follows:
the present disclosure is further described with reference to the following drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments in the present disclosure may be combined with each other. The embodiments will be described in detail below with reference to the accompanying drawings.
In the technical solution disclosed in one or more embodiments, as shown in fig. 1, an automatic measurement system for fuel oil storage of a ship oil tank comprises a data acquisition device, a data processing module and a central processing unit which are connected in sequence, the data acquisition device comprises a plurality of groups of liquid level sensor groups which are arranged at different height positions on the side surface of the fuel tank or the fuel cabinet in the same height, an inclination angle sensor arranged on the fuel tank or the fuel cabinet, and a pressure sensor 4 arranged at the bottom of the fuel tank or the fuel cabinet and temperature sensors uniformly arranged in the fuel tank or the fuel cabinet, wherein the data acquisition device acquires sensing data, the data processing module is used for acquiring liquid level data, an inclination angle, temperature and pressure according to the sensing data acquired by the data acquisition device and transmitting the liquid level data, the inclination angle, the temperature and the pressure to the central processing unit, and the central processor fuses and calculates the fuel storage of the fuel tank or the fuel cabinet according to the received data.
The data processing module receives, processes and converts the electric signals of the sensors into corresponding data such as pressure, temperature, position, inclination angle and the like; the electrical signal may be a voltage signal.
The liquid level height difference of the opposite surface of one side surface and the side surface can be obtained through the liquid level sensors 2 arranged at equal height, and the data of the inclination angle sensor can be assisted to determine the inclination angle and the inclination direction; the volume of fuel can be accurately determined when the shape of the fuel tank or the fuel tank is irregular. The multi-point measurement of temperature data allows the temperature distribution throughout the fuel tank or tank to be obtained, thereby determining the density distribution within the fuel tank or tank.
Optionally, the liquid level sensor 2 arranged at the same height is connected with the corresponding interface of the data processing module according to the azimuth position of the liquid level sensor 2 on the fuel tank or the fuel cabinet, and the liquid level difference can be obtained through the liquid level heights of different interfaces, and meanwhile, the fuel tank or the fuel cabinet is judged to incline to which azimuth. The azimuth position is based on the fuel tank or the fuel cabinet, a reference surface can be set, and other side surfaces provided with the liquid level sensor are based on the reference surface. If the left side surface is used as a reference, a set of sensors can be arranged on the opposite surface of the left side surface by taking the left side surface as a reference, and the data of the liquid level sensor on the reference surface can be compared with the data of the opposite sensor to judge which direction the liquid level sensor is inclined to.
As a further improvement, the fuel tank system further comprises a differential pressure sensor 3 arranged on the wall surface of the fuel tank or the fuel cabinet, a measuring point at one end of the differential pressure sensor 3 is arranged at the same position as one of the pressure sensors 4, the other end of the differential pressure sensor 3 measures atmospheric pressure, the differential pressure sensor 3 is connected with a pressure transmitter, the pressure transmitter is connected to a data processing module, the atmospheric pressure at different positions on the ocean or under climatic conditions is different, the gravity acceleration is different to a certain extent, and the influence of the atmospheric pressure and the gravity acceleration is eliminated through the differential pressure sensor 3.
Optionally, the pressure sensor 4 includes a metal explosion-proof housing, a through hole is arranged at the bottom of the metal explosion-proof housing, a sensitive area of the pressure sensor 4 is arranged at the bottom of the metal explosion-proof housing, and the sensitive area of the pressure sensor 4 detects pressure through the through hole.
In some embodiments, the metal explosion proof housing may be enclosed in a cylindrical or water-bottle type stainless steel housing, with the pressure sensor 4 connected to the data processing unit by an oil resistant cable.
Furthermore, the fuel tank or the fuel cabinet can further comprise an ultrasonic sensor 1 arranged on the top surface of the fuel tank or the fuel cabinet, and the ultrasonic sensor 1 is connected with the data processing module. Preferably, the ultrasonic sensor 1 is arranged at the center of the top surface of the fuel tank or the fuel cabinet. The ultrasonic sensor 1 is used for detecting the liquid level height of fuel oil, and further improves the precision of liquid level height detection.
Optionally, the system may further include a data communication module, or may also include a cloud platform, where the data communication module is used to establish a connection between the data processing module and the central processing unit, or establish a communication connection between the cloud platform and the central processing unit. The method can be wired point-to-point transmission or wireless internet of things transmission.
In some embodiments, the data processing unit is connected with a first wireless communication module, the central processor is connected with a second wireless communication module, and the first wireless communication module and the second wireless communication module establish wireless connection. The first wireless communication module and the second wireless communication module can be a ZigBee wireless module or a lora wireless module respectively.
In some embodiments, the central processing unit is connected with a 4G communication device, a Beidou data transmission device or/and a satellite communication device, the data connection between the ship and the cloud platform is established by adopting communication modes such as 4G, Beidou data transmission and satellite broadband, and the data is stored in a database on the shore through the cloud platform.
Optionally, a central processing unit may be disposed in the cab, and the central processing unit may include an industrial personal computer host, a programmable controller, a liquid crystal display, and a built-in related processing software. The central processing unit displays the fuel oil storage data of each oil tank and each cabinet obtained by real-time measurement and calculation through the liquid crystal display screen.
The power supply provides the system with power meeting the requirements. According to the power supply condition of the ship, the power supply module can adopt three modes of 110V/220V alternating current, 24V/5V direct current and a rechargeable lithium battery pack as the power source.
The embodiment also provides an automatic measurement method for the fuel oil storage amount of the oil tank of the ship, which can be used as the steps executed by the central processing unit and comprises the following steps:
step 1, acquiring temperature data in a fuel tank or a fuel cabinet, and acquiring corrected fuel density data according to the temperature data and the fuel density;
the fuel density data can be the fuel density distribution at different sections in the fuel tank or the fuel cabinet;
the volume of the fuel tank or the fuel cabinet can be the volume size distribution at different sections in the fuel tank or the fuel cabinet; in particular, it may be the integration of the cross-sectional areas of the fuel tank or the fuel tank at different heights within a defined height range.
And 4, calculating the fuel oil reserve according to the acquired fuel oil density data and the acquired fuel oil volume data.
The method for obtaining the corrected fuel density data according to the temperature data and the fuel density specifically comprises the following steps:
according to t at known temperature0The fuel density of (a) is corrected by the following formula:
Pt＝Pt0-Y(t-t0)
in the formula, Pt is the density of fuel oil at t ℃; t is the measured fuel temperature, Pt0Is that the fuel oil is at t0Corresponding fuel density in degrees Celsius, Pt0Can be obtained by looking up the fuel density correction table.
Optionally, t0Which may be 15 degrees celsius or 20 degrees celsius, the fuel supplier may provide the fuel density at the corresponding temperature.
The step of training the neural network model comprises:
step 31, collecting sample data aiming at each fuel oil cabin or fuel oil cabinet, wherein the sample data comprises liquid level height difference data and inclination angles in different inclination directions, height data collected by the ultrasonic sensor 1 and the actual volume of fuel oil of the fuel oil cabin or the fuel oil cabinet;
optionally, sample data may be collected on land, the fuel tank or the fuel cabinet may be tilted by providing a rotary tilting mechanism, and data, ultrasonic data, and inclination data of the liquid level sensor 2 provided in the fuel tank or the fuel cabinet may be collected.
And step 32, establishing a neural network model, training by taking the height difference data, the inclination angle and the height data as input and the actual capacity as output, and obtaining the neural network model for each fuel tank or fuel cabinet.
The following steps can be included after step 4: acquiring data according to set time to obtain the fuel storage of each fuel tank or fuel cabinet, drawing a fuel storage change curve according to the acquired time, and discarding data far away from the change curve to obtain the fuel storage change curve of each fuel tank or fuel cabinet. Effective filtering of the measurement results can be achieved, and measurement result jitter caused by jitter is filtered out.
Alternatively, the deviation threshold may be set for the deviation determination from the change curve, and exceeding the deviation threshold is regarded as data that is far from the change curve.
Optionally, the central processing unit further displays the fuel oil storage data of each oil tank and each oil tank obtained through real-time measurement and calculation through a liquid crystal display screen, transmits the data to the cloud platform through a suitable shore ship data communication mode, and stores the data in a corresponding shore-based fuel oil database for shore-based management.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
Claims (10)
1. The utility model provides an automatic measurement system of boats and ships oil hold fuel reserves which characterized by: including the data acquisition device, data processing module and the central processing unit who connects gradually, data acquisition device includes that the multiunit is at the liquid level sensor group of the equal altitude setting of the different height position of fuel oil compartment or fuel oil cabinet side, the angular transducer who sets up on fuel oil compartment or fuel oil cabinet to and set up at fuel oil compartment or fuel oil cabinet bottom pressure sensor and evenly set up the temperature sensor in fuel oil compartment or fuel oil cabinet, data acquisition device is used for gathering the sensing data, data processing module is used for obtaining liquid level data, inclination, temperature and pressure and transmitting to central processing unit according to the sensing data that data acquisition device gathered, central processing unit calculates the fuel oil reserves of this fuel oil compartment or fuel oil cabinet according to the data fusion that receives.
2. The system of claim 1, wherein the automated measurement system comprises: the data acquisition device also comprises an ultrasonic sensor arranged on the top surface of the fuel tank or the fuel cabinet, and the ultrasonic sensor is connected with the data processing module.
3. The system of claim 2, wherein the automated measurement system comprises: the ultrasonic sensor is arranged in the center of the top surface of the fuel tank or the fuel cabinet.
4. The system of claim 1, wherein the automated measurement system comprises: the liquid level sensors arranged at equal height are connected with the corresponding interfaces of the data processing module according to the position of the liquid level sensors on the fuel tank or the fuel cabinet.
5. The system of claim 1, wherein the automated measurement system comprises: the device is characterized by further comprising a differential pressure sensor arranged on the wall surface of the fuel tank or the fuel cabinet, a measuring point at one end of the differential pressure sensor is the same as the position of one pressure sensor, the other end of the differential pressure sensor measures the atmospheric pressure, and the differential pressure sensor is connected with a pressure transmitter and is connected to the data processing module through the pressure transmitter.
6. The system of claim 1, wherein the automated measurement system comprises: the pressure sensor comprises a metal explosion-proof shell, a through hole is formed in the bottom of the metal explosion-proof shell, the sensitive area of the pressure sensor is arranged at the bottom of the metal explosion-proof shell, and the pressure of the sensitive area of the pressure sensor is detected through the through hole.
7. The system of claim 1, wherein the automated measurement system comprises: the data communication module is used for establishing communication connection between the data processing module and the central processing unit, and the communication connection is wired point-to-point connection or wireless connection;
or
The cloud platform is further included, and the data communication module is used for establishing communication connection between the cloud platform and the central processing unit.
Or
The data communication module comprises a central processing unit which is connected with a 4G communication device, a Beidou data transmission device or/and a satellite communication device.
8. An automatic measurement method for fuel oil reserves of a ship oil tank is characterized by comprising the following steps:
acquiring temperature data in a fuel tank or a fuel cabinet, and acquiring corrected fuel density data according to the temperature data and the fuel density;
acquiring liquid level height data of ultrasonic detection of a fuel tank or a fuel cabinet, a plurality of liquid level data measured by a liquid level sensor and an inclination angle;
establishing a neural network model for identifying the volume of the fuel tank or the fuel cabinet, and inputting liquid level height data, liquid level data and an inclination angle corresponding to the fuel tank or the fuel cabinet into the trained neural network model to obtain the volume of fuel in the fuel tank or the fuel cabinet;
and calculating the fuel reserves according to the acquired fuel density data and the acquired fuel volume data.
9. The method for automatically measuring the fuel reserve of the oil tank of the ship as claimed in claim 8, wherein the method comprises the following steps: the step of calculating the fuel reserve based on the acquired fuel density data and fuel volume data further comprises the steps of: acquiring data according to set time to obtain the fuel storage of each fuel tank or fuel cabinet, drawing a fuel storage change curve according to the acquired time, and discarding data far away from the change curve to obtain the fuel storage change curve of each fuel tank or fuel cabinet.
10. The method for automatically measuring the fuel reserve of the oil tank of the ship as claimed in claim 8, wherein the method comprises the following steps: the step of training the neural network model comprises:
collecting sample data aiming at each fuel oil cabin or fuel oil cabinet, wherein the sample data comprises liquid level height difference data and inclination angles in different inclination directions, height data collected by an ultrasonic sensor and the actual volume of fuel oil of the fuel oil cabin or the fuel oil cabinet;
and establishing a neural network model, training by taking the height difference data, the inclination angle and the height data as input and the actual capacity as output, and obtaining the neural network model for each fuel tank or fuel cabinet.
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| CN202010119343.5A CN111238598A (en) | 2020-02-26 | 2020-02-26 | Automatic measurement system and measurement method for fuel oil storage amount of ship oil tank |
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| CN202010119343.5A CN111238598A (en) | 2020-02-26 | 2020-02-26 | Automatic measurement system and measurement method for fuel oil storage amount of ship oil tank |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111750952A (en) * | 2020-07-07 | 2020-10-09 | 北京中位科技有限公司 | Novel device and method for monitoring oil quantity of vehicle oil tank |
| CN111776189A (en) * | 2020-07-06 | 2020-10-16 | 南通航海机械集团有限公司 | Intelligent ship fuel oil purification system |
| CN112798074A (en) * | 2021-01-14 | 2021-05-14 | 慧加油(北京)物联科技有限公司 | Oil sensitivity precision measuring method and device |
| CN112794275A (en) * | 2021-01-09 | 2021-05-14 | 上善智城(苏州)信息科技有限公司 | Method and system for detecting fuel storage amount of gas station |
| CN113799944A (en) * | 2021-08-13 | 2021-12-17 | 江苏弘竣海洋科技有限公司 | Marine fuel monitoring system |
| CN117516659A (en) * | 2023-10-18 | 2024-02-06 | 广州市航易信息科技有限公司 | Liquid level measurement correction device and method with good stability for large-scale ship |
| CN117571085A (en) * | 2023-12-06 | 2024-02-20 | 广州市航易信息科技有限公司 | Automatic liquid level correction mechanism for large ship and method thereof |
-
2020
- 2020-02-26 CN CN202010119343.5A patent/CN111238598A/en not_active Withdrawn
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111776189A (en) * | 2020-07-06 | 2020-10-16 | 南通航海机械集团有限公司 | Intelligent ship fuel oil purification system |
| CN111776189B (en) * | 2020-07-06 | 2022-06-21 | 南通航海机械集团有限公司 | Intelligent ship fuel oil purification system |
| CN111750952A (en) * | 2020-07-07 | 2020-10-09 | 北京中位科技有限公司 | Novel device and method for monitoring oil quantity of vehicle oil tank |
| CN112794275A (en) * | 2021-01-09 | 2021-05-14 | 上善智城(苏州)信息科技有限公司 | Method and system for detecting fuel storage amount of gas station |
| CN112798074A (en) * | 2021-01-14 | 2021-05-14 | 慧加油(北京)物联科技有限公司 | Oil sensitivity precision measuring method and device |
| CN113799944A (en) * | 2021-08-13 | 2021-12-17 | 江苏弘竣海洋科技有限公司 | Marine fuel monitoring system |
| CN117516659A (en) * | 2023-10-18 | 2024-02-06 | 广州市航易信息科技有限公司 | Liquid level measurement correction device and method with good stability for large-scale ship |
| CN117516659B (en) * | 2023-10-18 | 2024-05-17 | 广州市航易信息科技有限公司 | Liquid level measurement correction device and method with good stability for large-scale ship |
| CN117571085A (en) * | 2023-12-06 | 2024-02-20 | 广州市航易信息科技有限公司 | Automatic liquid level correction mechanism for large ship and method thereof |
| CN117571085B (en) * | 2023-12-06 | 2024-05-28 | 广州市航易信息科技有限公司 | Automatic liquid level correction mechanism for large ship and method thereof |
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