CN114368458A - Ship water level measurement method and system based on Excel auxiliary calculation - Google Patents
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- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
- B63B39/12—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude for indicating draught or load
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Abstract
The invention provides a ship water level measurement method and system based on Excel auxiliary computing. The invention comprises the following steps: inputting basic parameters of ship loading and unloading goods into an Excel computing interface, computing ship average draft and ship draft correction coefficients according to the basic parameters of the ship loading and unloading goods, and computing to obtain ship waterline corrected draft and ship six-side average draft; calculating to obtain ship sag corrected draft through ship waterline corrected draft and ship six-side average draft, searching corresponding displacement, tonnage per centimeter and drift distance in the ship loading and unloading basic parameters according to the ship sag corrected draft, and calculating to obtain ship density corrected displacement; and finally, calculating the weight of the ship before and after loading and unloading through the density correction displacement of the ship. According to the invention, when a crew works on water level measurement, a large amount of calculation work is not needed, and the final loading and unloading cargo quantity of the ship can be obtained only by inputting relevant measurement parameters and basic parameters into the system, so that the working efficiency is greatly improved.
Description
Technical Field
The invention relates to a ship water level measurement technology, in particular to a ship water level measurement method and system based on Excel auxiliary calculation, and belongs to the technical field of ship transportation.
Background
The water gauge is used for determining the displacement of the ship before and after loading and unloading by utilizing the relation between the draft change of the ship before and after loading and unloading and the displacement of the ship, and the displacement difference of the ship deducts the water and oil changes of the ship to obtain the quantity of the loaded and unloaded cargos. However, the water gauge weighing work is heavy, a large amount of manpower and material resources are consumed for observation of six-side draught of a ship and subsequent water gauge weighing calculation, the water gauge weighing work often takes 2-3 hours once, and more time may be consumed if calculation errors occur in the middle. Therefore, the following two main disadvantages exist in the prior art:
(1) and a manual calculation mode is adopted, so that the calculation work is heavy and the time is long.
(2) The water gauge detection amount is large, calculation errors easily occur in manual calculation, and the detection amount precision is reduced.
Disclosure of Invention
The invention aims to utilize the function of Excel software to perform Excel programming on the water gauge calculation process to form an automatic calculation system of the water gauge, so as to realize the effect of automatically calculating the weight of the ship loading and unloading goods after inputting basic parameters, and when a crew works on the water gauge, the crew does not need to perform a large amount of calculation work, and only needs to input related measurement parameters and the basic parameters into the system of the invention, so that the final ship loading and unloading goods quantity can be obtained.
In order to achieve the purpose, the invention adopts the technical scheme that:
a ship water gauge measuring method based on Excel auxiliary calculation comprises the following steps:
inputting basic parameters of ship loading and unloading goods into an Excel computing interface;
calculating the average draft of the ship and the draft correction coefficient of the ship according to the basic parameters of the loading and unloading of the ship;
calculating to obtain the corrected draft of the ship waterline according to the average draft of the ship and the ship draft correction coefficient; calculating the average draft of six sides of the ship according to the corrected draft of the ship waterline;
calculating to obtain the corrected draft of the ship sag according to the corrected draft of the ship waterline and the average draft of six sides of the ship;
searching the corresponding displacement, draught tonnage per centimeter and drift distance in the basic loading and unloading parameters of the ship according to the ship arch sag corrected draft;
calculating to obtain the density correction displacement of the ship according to the displacement, the tonnage of draft per centimeter and the drift distance; and calculating the weight of the ship before and after loading and unloading according to the density correction displacement of the ship.
Further, the ship loading and unloading basic parameters comprise: the distance from an observation point to the vertical line from the head to the tail of the ship, the length of the ship, the draft reading of the head, the middle and the tail of the ship, the water density, the ship constant, the oil storage quantity, the draft difference and the ballast water quantity.
Further, the calculating of the average draft of the ship and the draft correction coefficient according to the basic parameters of the loading and unloading of the ship comprises the following steps: the average draft d observed at the head, middle and tail of the ship is calculated by using the formula (1)F,dM,dA；
In the formula (d)IP,dISF, M, a respectively represent the front, middle and rear drafts of the starboard side of the ship, i.e. the observed values of the six-sided draft of the ship; then, the draft correction coefficient C of the head, the middle and the tail of the ship is calculated by using the step (2)F，CM，CA；
Wherein t is the draft difference of the ship, the specified tail inclination is negative, the head inclination is positive, liAnd i is F, M and A is the distance from the head, middle and tail vertical lines of the ship to the water gauge of the ship.
Further, the calculating to obtain the corrected draft of the ship waterline through the average draft of the ship and the ship draft correction coefficient comprises: calculating the modified draft of the water line in the head, the middle and the tail of the ship by using the formula (3);
in the formula (d)F1,dM1,dA1Indicating the modified draft of the fore, mid and aft waterlines of the vessel.
Further, the calculation of the corrected draft through the ship waterline to obtain the average draft of six sides of the ship comprises the following steps: calculating the average draught of six surfaces of the ship by using the formula (4);
in the formula (d)*M1Indicating the average draft of the six sides of the vessel.
Further, the calculation of the corrected draft of the ship sag through the corrected draft of the ship waterline and the average draft of six sides of the ship comprises the following steps: calculating the ship arch sag correction draught by using the formula (5);
in the formula (d)*M2Indicating the corrected sag draft.
Further, the calculating to obtain the ship density correction displacement through the displacement, the draught tonnage per centimeter and the drift distance comprises: calculating the trim correction displacement delta of the ship by using the formula (6);
in the formula, LbpDenotes the length of the ship, xfRepresenting the drift distance;
calculating the total displacement Delta of the ship after trim correction by using the formula (7)1；
Δ1＝Δ0+δΔ (7)
In the formula,. DELTA.0Represents the initial displacement;
calculating the displacement of the ship after density correction by using the formula (8);
Δ＝ρΔ1/1.025 (8)
in the formula, ρ represents the seawater density.
Further, the step of calculating the weight of the ship before and after loading and unloading through the ship density correction displacement comprises the following steps: calculating the weight of the ship before and after loading and unloading by using the formula (9);
in the formula,. DELTA.fIndicating the displacement of the vessel before loading/unloading, GfRepresenting the total hold reserve, Δ, before loading/unloadingaIndicating the displacement of the vessel after loading/unloading, GaRepresenting the total hold reserve after loading/unloading.
A ship water gauge system based on Excel auxiliary computing comprises: the system comprises a parameter acquisition device, a remote control terminal and a water gauge detection quantity calculation module; the parameter acquisition device, the remote control terminal and the water gauge detection quantity calculation module transmit data through wireless communication; the water gauge volume calculation module comprises: the ship loading and unloading weight calculation module is used for calculating the weight of the ship loading and unloading goods; the parameter acquisition device includes: the unmanned boat is used for collecting basic parameters required by water level detection calculation; the unmanned ship shoots ship image information through image acquisition equipment and sends the ship image information to the parameter input module; and the remote control terminal controls the unmanned ship to act according to the acquisition requirement of the basic parameters.
Compared with the prior art, the ship water level measurement method based on Excel auxiliary calculation has the following advantages:
1) according to the invention, when a crew works on water level measurement, a large amount of calculation work is not needed, and the final ship loading and unloading cargo quantity can be obtained only by inputting relevant measurement parameters and basic parameters into the calculation system, so that the water level measurement work efficiency is improved, and the work cost is greatly reduced.
2) The invention has strong universality and can be suitable for the water gauge work of loading and unloading cargos of various ship types, such as cargo ships for transporting bulk cargos, such as oil tankers, bulk cargo ships, ore sand ships, groceries and the like.
Drawings
FIG. 1 is a flow chart of a ship water level measurement method based on Excel auxiliary computing;
FIG. 2 is a schematic diagram of a basic parameter input area for loading and unloading cargo of a ship according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating calculation of corrected draft of a ship sag according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating weight calculation of cargo loading and unloading of a ship according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of the overall calculation of a water level gauging system according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a ship water gauging system based on Excel auxiliary computing.
In the above drawings, 1, a parameter acquisition device; 2. a remote control terminal; 3. a water gauge detection quantity calculation module; 31. a parameter input module; 32. an arch sag correction draught calculation module; 33. and a ship loading and unloading weight calculation module.
Detailed Description
The invention is further illustrated by the following examples:
as shown in fig. 1 and fig. 5, the present embodiment discloses a ship water gauging method based on Excel auxiliary computing, which includes:
101. inputting basic parameters of ship loading and unloading goods into an Excel computing interface;
specifically, the basic ship loading and unloading parameters comprise: the distance from an observation point to the vertical line from the head to the tail of the ship, the length of the ship, the draft reading of the head, the middle and the tail of the ship, the water density, the ship constant, the oil storage quantity, the draft difference and the ballast water quantity. As shown in fig. 2, a basic parameter input area for loading and unloading goods is planned in Excel, and basic parameters for loading and unloading goods of a ship are input.
102. Calculating the average draft of the ship and the draft correction coefficient of the ship according to the basic parameters of loading and unloading of the ship;
specifically, as shown in fig. 3, the average draft d observed from the head to the middle of the tail of the ship is calculated by the formula (1)F,dM,dA；
In the formula (d)IP,dISF, M, a respectively represent the front, middle and rear drafts of the starboard side of the ship, i.e. the observed values of the six-sided draft of the ship;
then, the draft correction coefficient C of the head, the middle and the tail of the ship is calculated by using the step (2)F，CM，CA；
Wherein t is the draft difference of the ship, the specified tail inclination is negative, the head inclination is positive, liAnd i is F, M and A is the distance from the head, middle and tail vertical lines of the ship to the water gauge of the ship.
103. Calculating to obtain the corrected draft of the ship waterline according to the average draft of the ship and the ship draft correction coefficient; calculating the average draft of six sides of the ship according to the corrected draft of the ship waterline;
specifically, as shown in fig. 3, the draft corrected for the fore, middle and aft waterlines of the ship is calculated by using equation (3);
in the formula (d)F1,dM1,dA1Indicating the modified draft of the fore, mid and aft waterlines of the vessel.
Calculating the average draught of six surfaces of the ship by using the formula (4);
in the formula (d)*M1Indicating the average draft of the six sides of the vessel.
104. Calculating to obtain the corrected draft of the ship sag through the corrected draft of the ship waterline and the average draft of six sides of the ship;
specifically, the ship sag correction draught is calculated by using the formula (5);
in the formula (d)*M2Indicating the corrected sag draft.
As shown in fig. 3, when calculating and correcting the sag using the system of the present invention, the formula (5) is mainly calculated, and when "((F30 + F26)/2") is input to the cell F31, the value of the corrected draft of the ship sag can be obtained.
105. According to the ship arch sag correction draft, the corresponding displacement, the draught tonnage per centimeter and the drift distance in the ship loading and unloading basic parameters are searched;
specifically, as shown in fig. 4, the displacement, the ton per centimeter and the center of gravity of the ship, which are found in the ship loading and unloading basic parameter table, are input into the cells G34, G35 and G36, respectively, based on the known values of the corrected draft.
106. Calculating to obtain the density correction displacement of the ship according to the displacement, the tonnage of draft per centimeter and the drift distance; and calculating the weight of the ship before and after loading and unloading through the density correction displacement of the ship.
Specifically, as shown in fig. 4, the ship trim correction displacement δ Δ is calculated by equation (6);
in the formula, LbpDenotes the length of the ship, xfRepresenting the drift distance;
calculation of trim-corrected vessel using equation (7)Total displacement delta1；
Δ1＝Δ0+δΔ (7)
In the formula,. DELTA.0Represents the initial displacement;
calculating the displacement of the ship after density correction by using the formula (8);
Δ＝ρΔ1/1.025 (8)
in the formula, ρ represents the seawater density.
Calculating the weight of the ship before and after loading and unloading by using the formula (9);
in the formula,. DELTA.fIndicating the displacement of the vessel before loading/unloading, GfRepresenting the total hold reserve, Δ, before loadingaIndicating the displacement of the vessel after loading/unloading, GaRepresenting the total amount of the full-ship reserve after loading.
The total ship reserve amount to be input comprises: vessel constants, ballast water volume, and oil inventory.
As shown in fig. 4, when the weight of the ship before loading is obtained, the weight before loading and after unloading can be obtained by mainly calculating the formula (9) and inputting the values of (F41-F42) - (J41-J42) "into the cell F44.
As shown in fig. 6, the present embodiment provides a ship water gauging system based on Excel auxiliary computing, including: the device comprises a parameter acquisition device 1, a remote control terminal 2 and a water gauge detection quantity calculation module 3; the parameter acquisition device 1, the remote control terminal 2 and the water gauge detection quantity calculation module 3 transmit data through wireless communication; the water gauge quantity calculation module 3 includes: the ship loading and unloading weight calculation system comprises a parameter input module 31 for identifying ship image information acquired by a parameter acquisition device as basic parameters and inputting the parameters, an arch sag correction draft calculation module 32 for calculating ship arch sag correction draft, and a ship loading and unloading weight calculation module 33 for calculating ship loading and unloading weight; parameter acquisition device 1 includes: the unmanned boat is used for collecting basic parameters required by water level detection calculation; the unmanned ship shoots ship image information through the image acquisition equipment and sends the ship image information to the parameter input module 31 through the data transmission device; and the remote control terminal 2 controls the unmanned ship to act according to the acquisition requirements of the basic parameters.
Specifically, the unmanned surface vehicle is used for reading the water gauge, and the acquired water gauge image is transmitted to the parameter entry module 31 through the wireless network. The parameter input module 31 analyzes the water gauge image into basic ship loading and unloading parameters and inputs the basic ship loading and unloading parameters into an Excel computing interface; the sag correction draft calculation module 32 obtains the ship sag correction draft through an Excel calculation module according to the basic ship loading and unloading parameters; the ship loading and unloading goods weight calculation module 33 searches the corresponding displacement, draught tonnage and center distance of each centimeter in the ship loading and unloading goods basic parameters according to the ship arch sag correction draft, inputs the displacement, the draught tonnage and the center distance into an Excel calculation interface, calculates the weight of the ship before and after loading and unloading goods, thereby obtaining the goods weight of the loading and unloading goods, and finally prints and outputs the calculation result by using a computer.
The basic parameters acquired by the unmanned ship mainly include the distance from an observation point to a vertical line from the head to the tail of the ship, the length of the ship and the draught of the head, the middle and the tail of the ship.
The unmanned ship is controlled by the remote control terminal 2 to sail, and an inertial navigation system, a camera, a control system, a motor, a rudder blade and a propeller are arranged on the unmanned ship. The unmanned ship sails to the ship waterline and takes pictures through the camera. The remote control terminal 2 is connected with the unmanned ship control system through wireless signals, and can remotely control the unmanned ship to sail. The inertial navigation system is used for measuring the attitude of the unmanned ship; the motor rotates forwards and backwards according to a control command of the control system; the propeller is connected with a motor to generate propulsive force; the rudder blade is connected with a motor to generate a ship turning moment.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A ship water gauge measuring method based on Excel auxiliary calculation is characterized by comprising the following steps:
inputting basic parameters of ship loading and unloading goods into an Excel computing interface;
calculating the average draft of the ship and the draft correction coefficient of the ship according to the basic parameters of the loading and unloading of the ship;
calculating to obtain the corrected draft of the ship waterline according to the average draft of the ship and the ship draft correction coefficient; calculating the average draft of six sides of the ship according to the corrected draft of the ship waterline;
calculating to obtain the corrected draft of the ship sag according to the corrected draft of the ship waterline and the average draft of six sides of the ship;
searching the corresponding displacement, draught tonnage per centimeter and drift distance in the basic loading and unloading parameters of the ship according to the ship arch sag corrected draft;
calculating to obtain the density correction displacement of the ship according to the displacement, the tonnage of draft per centimeter and the drift distance; and calculating the weight of the ship before and after loading and unloading according to the density correction displacement of the ship.
2. The Excel-assisted calculation-based ship water gauging method according to claim 1, wherein said ship loading and unloading basic parameters comprise: the distance from an observation point to the vertical line from the head to the tail of the ship, the length of the ship, the draft reading of the head, the middle and the tail of the ship, the water density, the ship constant, the oil storage quantity, the draft difference and the ballast water quantity.
3. The Excel-aided calculation based ship water gauging method according to claim 2, wherein said calculating ship mean draft and ship draft correction factors according to said ship loading and unloading basic parameters comprises:
the average draft d observed at the head, middle and tail of the ship is calculated by using the formula (1)F,dM,dA；
In the formula (d)IP,dISF, M, a respectively represent the front, middle and rear drafts of the starboard side of the ship, i.e. the observed values of the six-sided draft of the ship;
then, the draft correction coefficient C of the head, the middle and the tail of the ship is calculated by using the step (2)F，CM，CA；
Wherein t is the draft difference of the ship, the specified tail inclination is negative, the head inclination is positive, liAnd i is F, M and A is the distance from the head, middle and tail vertical lines of the ship to the water gauge of the ship.
4. The Excel-aided calculation-based ship water gauging method according to claim 3, wherein said calculating a ship waterline corrected draft by said ship average draft and a ship draft correction coefficient comprises:
calculating the modified draft of the water line in the head, the middle and the tail of the ship by using the formula (3);
in the formula (d)F1,dM1,dA1Indicating the modified draft of the fore, mid and aft waterlines of the vessel.
5. The Excel-aided calculation based ship water gauging method according to claim 4, wherein said calculating the ship's six-sided average draft from said ship's waterline corrected draft comprises:
calculating the average draught of six surfaces of the ship by using the formula (4);
in the formula (d)*M1Indicating the average draft of the six sides of the vessel.
6. The Excel-aided calculation based ship water gauging method according to claim 5, wherein said calculating ship sag correction draft from said ship waterline correction draft and ship hexahedral average draft comprises:
calculating the ship arch sag correction draught by using the formula (5);
in the formula (d)*M2Indicating the corrected sag draft.
7. The Excel-aided calculation based ship water gauging method according to claim 6, wherein said calculating a ship density correction displacement from said displacement, tonnage per centimeter draft and drift distance comprises:
calculating the trim correction displacement delta of the ship by using the formula (6);
in the formula, LbpDenotes the length of the ship, xfRepresenting the drift distance;
calculating the total displacement Delta of the ship after trim correction by using the formula (7)1；
Δ1＝Δ0+δΔ (7)
In the formula,. DELTA.0Represents the initial displacement;
calculating the displacement of the ship after density correction by using the formula (8);
Δ＝ρΔ1/1.025 (8)
in the formula, ρ represents the seawater density.
8. The Excel-assisted calculation based ship water gauging method in accordance with claim 7, wherein said obtaining the weight of the ship before and after loading and unloading through said ship density correction displacement calculation further comprises:
calculating the weight of the ship before and after loading and unloading by using the formula (9);
in the formula,. DELTA.fIndicating the displacement of the vessel before loading/unloading, GfRepresenting the total hold reserve, Δ, before loading/unloadingaIndicating the displacement of the vessel after loading/unloading, GaRepresenting the total hold reserve after loading/unloading.
9. A boats and ships water gauge system based on Excel auxiliary computing, its characterized in that includes:
the system comprises a parameter acquisition device, a remote control terminal and a water gauge detection quantity calculation module;
the parameter acquisition device, the remote control terminal and the water gauge detection quantity calculation module transmit data through wireless communication;
the water gauge volume calculation module comprises: the ship loading and unloading weight calculation module is used for calculating the weight of the ship loading and unloading goods;
the parameter acquisition device includes: the unmanned boat is used for collecting basic parameters required by water level detection calculation; the unmanned ship shoots ship image information through image acquisition equipment and sends the ship image information to the parameter input module;
and the remote control terminal controls the unmanned ship to act according to the acquisition requirement of the basic parameters.
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| 范育军;: "利用EXCEL实现水尺计量计算自动化", 航海技术, no. 04, 25 July 2010 (2010-07-25) * |
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