JP3785115B2 - Ship fleet control system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ship fleet control system, and is particularly useful when applied to the formulation of a cargo handling plan for a fleet (fleet) of tankers that transport crude oil.
[0002]
[Prior art]
Conventionally, a liquid cargo handling plan for a tanker or the like has been carried out by a skilled person on board the tanker or the like with respect to a cargo handling order such as the oil type from the land side and the quantity loaded. The result is reported to the land management side, and the land management side evaluates the response from the candidate ship under control from the viewpoint of loading efficiency, route length, bunkering, etc. Assign the target ship.
[0003]
Here, a cargo handling plan for a cargo handling order requires abundant experience and knowledge, which may be a heavy burden on the crew who perform this, and an automated cargo handling planning system, which is an automation support system for this work, has been developed. It is mounted on. Furthermore, in recent years, an integrated cargo handling automation system combining this automated cargo handling planning system and a cargo handling automation system has been proposed, and ships equipped with such an integrated cargo handling automation system have also appeared.
[0004]
FIG. 5 is an explanatory diagram conceptually showing a control system according to the prior art of a fleet of ships equipped with the integrated cargo handling automation system as described above. In the figure, A is a land management side, B, C, and D are vessels (tankers) that form a certain fleet, each equipped with an integrated cargo handling automation system consisting of an automated cargo handling planning system 1 and a cargo handling automation system 2. Yes. Each ship B, C, D and the land management side A exchange data using telephones, facsimiles, or the like.
[0005]
In such a ship fleet control system, first, a land handling side A notifies each ship B, C, D of a cargo handling order. In each of the ships B, C, and D, an expert creates a cargo handling plan for the cargo handling order using an automatic cargo handling planning system, and notifies the plan to the land management side A. On land management side A, a ship allocation plan is formulated based on a cargo handling plan from each ship B, C, D. This formulation is done from the viewpoint of transportation costs and the possibility of safe and reasonable loading.
[0006]
Thereafter, the cargo handling order determined for each of the ships B, C, and D is notified again from the land-side management side A. Ships B, C, and D that have received the confirmed cargo handling order move to the cargo handling site based on the cargo handling order and perform predetermined cargo handling.
[0007]
[Problems to be solved by the invention]
In the ship fleet control system according to the prior art as described above, repeated communication between the land and the ship is not only a burden for the person in charge (worker) on both the land side and the ship side, but also due to a defect in the contents of the communication. He is worried about the problem that accidents and troubles are likely to occur. In addition, it takes time to communicate with each other, and it becomes an obstacle factor when it is desired to establish timely business negotiations that appropriately respond to, for example, fluctuations in crude oil prices in the crude oil market. That is, there is a problem of lack of mobility.
[0008]
Furthermore, the total cargo handling automation system as described above has a large facility scale and high cost, and there is usually a situation in which all the ships under control do not have standard equipment.
[0009]
An object of the present invention is to provide a ship fleet control system capable of quickly and easily formulating a rational cargo handling plan for a fleet of ships such as tankers at low cost.
[0010]
[Means for Solving the Problems]
The configuration of the present invention that achieves the above object is characterized by the following points.
[0011]
1) In a ship fleet control system that controls ship allocation plans and cargo handling plans by transferring data between multiple ships that make up a fleet and a land management center.
The land management center
Each ship's position data, etc. necessary to develop each ship's cargo handling plan, data that changes from moment to moment, attribute data such as shear force and bending moment of each ship, and which tank of which ship is free, etc. In addition to having a database that stores data representing the state of the ship,
Based on the cargo handling order, with reference to tank data of each ship stored in the database, etc., it has an automatic tank allocation function used to select a ship that can handle the cargo handling order, and the distance required for dispatching, A ship assignment planning system that automatically makes a ship assignment plan that can reduce transportation costs as much as possible from time, etc .;
Based on the ship assignment plan provided by this ship assignment plan system and the individual ship data provided from the database, the cargo handling order should not be hindered in the hull attitude, draft and strength of the ship to which the handling order processing is assigned. In addition to formulating a plan, the ship's hull posture, draft, strength, cargo handling quantity, etc. based on the drafted cargo handling plan are comprehensively evaluated by comparing them with target values. In addition, it simulates the hull situation in time series when the actual cargo handling work is performed according to the cargo handling plan finally selected by the user based on the above evaluation, and the result of this simulation is good It is possible to send an automatic loading / unloading planning system that can correct the dispatching plan when there is a defect while transmitting data related to the loading / unloading plan confirmed to each ship. Rukoto.
[0012]
2) In the fleet control system described in 1) above,
Each ship shall have a cargo handling automation system that automatically performs remote operation of various equipment such as the valves of the ship based on the data related to the cargo handling plan sent from the land management center.
[0013]
3) In the fleet control system described in 1) or 2) above,
There are multiple land management centers, and each land management center is connected via LAN or public telephone line.
[0014]
4) In the ship fleet control system described in any one of 1) to 3) above,
Communication between the land management center and each ship was made using a satellite communication system.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0016]
FIG. 1 is an explanatory diagram conceptually showing the fleet control system shown in the embodiment of the present invention. The fleet (fleet) in this system is a tanker, and the description will be made assuming that crude oil is loaded on the tanker. However, there is no need to limit the type of ship and the type of cargo in this way.
[0017]
As shown in FIG. 1, the land management center E is a management center installed on the land to manage the fleet of the ships F, G, and H in a unified manner. The ship allocation planning system 3, the automatic cargo handling planning system 4, the database 5 and a communication interface 6.
[0018]
Of these, the ship allocation planning system 3 refers to the tank data of the controlled ships F, G, H stored in the database 5 based on the cargo handling order, and the ships F, G that can handle the cargo handling order. , H is an automatic tank allocation function used for selecting H, and automatically prepares a ship allocation plan that can reduce transportation costs as much as possible from the distance, time, etc. required for ship allocation. . Here, when planning a ship allocation plan, except for ships on regular routes, for example, in order to deal mainly with spot-like negotiations (spot crude oil), ships with tanks that can handle spot crude oil are used as a basis for transportation costs. Transporting vessels with tanks that can handle spot crude oil based on the tank data of all the vessels under control (data of which tanks are in which tanks, etc.) Any system may be selected based on cost. That is, when loading Y liters of crude oil at the destination X, the transportation cost from the ship F, G, H that can load Y liter of crude oil to the destination X is calculated, and the lowest cost ship F, Select G, H. If there are empty tanks in the ships F, G, H on the regular route that are in operation, and ships can be loaded into the empty tanks, the vessels F, G, H on the regular route are also included in the candidates.
[0019]
The automatic cargo handling planning system 4 is based on the ship allocation plan provided from the ship allocation planning system 3 and the individual vessel data provided from the database 5, and the hull postures of the ships F, G, H to which the processing of the cargo handling order is assigned, In addition to formulating a cargo handling plan so that there is no hindrance in drafting and strength, the cargo handling plan is comprehensively compared by comparing the ship's hull attitude, draft, strength, cargo handling quantity, etc. with the target values based on the drafted cargo handling plan. The fleet status when the actual cargo handling work is performed according to the cargo handling plan that the user finally selected based on the evaluation is provided in time series. Simulate and transmit the data related to the cargo handling plan confirmed to be good as a result of this simulation to each applicable ship. A positive possible ones.
[0020]
In other words, in order to process the cargo handling order supplied from the ship allocation planning system 3, the vessels F, G, H of the vessels F, G, H to which the processing of the cargo handling order is assigned become the target attitude. Allocate oil to each cargo tank. At the same time, the amount of water poured into the ballast tanks of the ships F, G, H is calculated, and an evaluation is performed for each stage during cargo handling based on the calculation result to comprehensively judge the cargo handling plan. In other words, when processing cargo handling orders, what amount of ballast water should be put into which ballast tank when what amount of oil is put into which cargo tank of the ships F, G, H to which the order is assigned. , The attitudes of the ships F, G, and H expressed through factors such as the hull attitude, draft, and strength are evaluated. At this time, the shearing force and bending moment acting on the hulls of the ships F, G, and H are also considered.
[0021]
The cargo handling plan evaluation function is embodied as follows, for example. Prepare an evaluation function of 0 to 100% for the posture, longitudinal strength, etc. of ships F, G, H during cargo handling, and set the weights that match the customer's needs to the values obtained from each evaluation function For example, when loading crude oil into a cargo tank, the cargo handling plan is comprehensively evaluated from the viewpoint of whether or not ballast water can be controlled while maintaining the hull strength of the ships F, G, and H. That is, when there are three evaluation indexes A, B, and C, weight constants F _a , F _b , and F _c are set for each, and the evaluation Q 1 is obtained based on the following equation (1).
Q1 = F _a + F _b + F _c (1)
However, F _a + F _b + F _c = 1
[0022]
Since the evaluation of the cargo handling plan as described above is performed at each stage (predetermined division), it is necessary to simulate data between the stages later. For this reason, the automatic cargo handling planning system 4 also has a predetermined simulation function. That is, when a predetermined cargo handling plan is executed by a predetermined ship F, G, H, the state of the ship F, G, H is changed for each stage. The operator finally confirms whether there is any inconvenience by reproducing the state of G and H on the monitor image.
[0023]
The database 5 stores basic data necessary for executing a ship allocation / loading plan, such as data on the tanks of the ships F, G, and H under all control and data on hull strength. At the same time, the position information of each ship F, G, and H that changes from moment to moment is also stored as real-time data by taking in via GPS. The ship allocation planning system 3 and the automatic cargo handling planning system 4 read and use the data in the database 5 as appropriate in order to perform the respective predetermined processes. Further, the land management center E can monitor each ship F, G, H by reproducing the data in the database 5.
[0024]
The communication interface 6 sends data from each ship F, G, H to the database 5 by a protocol such as SMTP, FTP, and sends necessary data to each ship F, G, H.
[0025]
Each ship F, G, H is equipped with a communication means 7 and a cargo handling automation system 8. Here, the communication means 7 is for exchanging predetermined information with the land side via the communication interface 6 of the land management center E. The cargo handling automation system 8 realizes the same function as the conventional cargo handling automation system 2 shown in FIG. That is, based on the data related to the cargo handling plan sent from the land management center E, the remote control of various devices such as the valves of the ships F, G, H is automatically performed. To prompt the operation. Thereby, even if it is not a skilled operator, predetermined cargo handling can be performed.
[0026]
FIG. 2 is a flowchart showing the processing executed in each part of the land management center E in time series. As shown in the figure, a ship allocation plan is first prepared (see step S1). This planning is executed by the ship assignment planning system 3, and a plan is selected so that the transportation cost is as low as possible, and the plan is adopted in order from the lowest cost plan to proceed to the next step.
[0027]
Next, a cargo handling plan for each of the ships F, G, and H is drafted based on the drafted ship allocation plan. This planning is executed by the automatic cargo handling planning system 4 and, for example, oil is allocated to each tank in the amount shown in the ship allocation plan, and shearing force, moment, etc. are calculated for each cargo handling stage, The degree of satisfaction is output by comparison (see step S2). Since this satisfaction is obtained as the evaluation function Q1, each evaluation function Q1 is averaged to calculate a comprehensive evaluation, adopted from the highest evaluation order, and proceeds to the next step.
[0028]
Subsequently, the simulation confirms the change in strength between the various tests by the simulation in the automatic cargo handling planning system 4, and if there is a problem, the same simulation is performed on the cargo handling plan having the next highest evaluation (step S3). reference.).
[0029]
As a result of the simulation, if there is a problem with all the ship allocation plans, the ship allocation plan in the ship allocation planning system 3 is redone (see step S4).
[0030]
As a result of the simulation, when it is confirmed that there is no problem in the ship allocation plan, predetermined cargo handling plan data is transmitted to each ship F, G, H via the communication interface 6 (see step S5).
[0031]
The vessel fleet control system according to this embodiment including the processing at the land management center E as described above performs the following processing as a whole. This will be described with reference to FIG. FIG. 3 is a flowchart showing the processing in the marine vessel fleet control system shown in FIG. 1 in time series. As shown in the figure, first, a work plan including a ship allocation plan and a cargo handling plan is created by the ship allocation planning system 3 and the automatic cargo handling planning system 4 of the land management center E (see step S11). Next, the operator confirms the contents of the work plan by simulation, and saves the created work plan if it is satisfactory (see steps S12 and S13). On the other hand, if there is a problem, the work plan is created. (See steps S13 and 11). This is the processing at the land management center E.
[0032]
Data on the created work plan is transmitted to each ship F, G, H (dotted line portion in the figure). For transmission at this time, all existing communication means can be used, but data communication is preferred. On each ship F, G, H side, the work plan received via the communication means 7 is read and the content is confirmed (see steps S15 and S16). Thereafter, automatic guidance control is executed (see step S17). At this time, the cargo handling automation system 8 is used.
[0033]
In the above embodiment, the land management center E is installed at one place, but there is no particular limitation on the number of the installation places. An example of an embodiment having a plurality of land management centers E will be described as another embodiment of the present invention. As shown in FIG. 4, the land management centers E-1, E-2, E-3 in this embodiment are distributed and arranged inside a predetermined building 11 such as a management center building, and the hub 12 In addition to being connected to the data management server 13, they are connected to each other to construct an in-house LAN. Here, the data management server 13 includes a database for storing data for processing performed at each land management center E-1, E-2, E-3, and each land management center E-1, E-2, E-. 3 functions as a storage unit for storing work plan data and the like to be transmitted to each ship F, G, H, and a storage unit for storing data transmitted from the outside. . The data management server 13 is connected to a land transmitting / receiving station 15 via a public telephone network 14.
[0034]
Other land management centers E-4, E-5, E-6 are also connected to the public telephone network 14. Such land management centers E-4, E-5, and E-6 are, for example, distributed throughout the country. That is, each branch of a shipping company corresponds to this. On the other hand, the building 11 is a part corresponding to the head office function, for example, when the land management centers E-1, E-2, E-3 are distributedly arranged in each section related to the head office. As a result, for example, land management centers E-1, E-2, E-3 having jurisdiction are allocated to each sea area, and parallel processing of data is performed at each land management center E-1, E-2, E-3. It can also be done.
[0035]
According to such a ship fleet control system, it is possible to easily exchange data between the land management centers E-1 to E-6, and it is extremely possible for the ships F, G, and H constituting the fleet. Accurate and reasonable data for cargo handling plans can be supplied.
[0036]
【The invention's effect】
As described in detail with the above embodiment, the invention described in [Claim 1] is based on the data dispatching between the plurality of ships constituting the fleet and the land management center, and the ship allocation plan for each ship. In addition, in the ship fleet control system for controlling the cargo handling plan, the onshore management center performs the data that changes from moment to moment, such as the position data of each vessel necessary for formulating the cargo handling plan for each vessel, the shearing force and the bending moment of each vessel. And a database for storing data representing the state of each ship, such as which tank of which ship is vacant, etc., and the tank of each ship stored in the database based on the cargo handling order Has an automatic tank allocation function used to select a ship that can handle the cargo handling order by referring to data, etc. At the same time, a ship allocation plan system that automatically makes a ship allocation plan that can reduce the transportation cost as much as possible from the distance and time required for the ship allocation, and the ship allocation plan provided from this ship allocation plan system Based on the individual ship data provided from the database and the cargo handling order, the cargo handling plan shall be formulated so that there will be no hindrance to the hull attitude, draft and strength of the ship to which the handling order processing is assigned. Comprehensively evaluate the cargo handling plan by comparing the ship's hull attitude, draft, strength, cargo handling quantity, etc. with target values, and provide this to the user in descending order of this evaluation, and the user finally submits the evaluation The ship hull conditions were simulated in time series when actual cargo handling work was performed in accordance with the cargo handling plan selected based on the results of the simulation. While transmitting the data relating to handling plan applicable to each ship, because if there is a defect and an automatic handling planning system modifiable distribution shipping schedules,
Cargo handling work by multiple ships in the fleet can be centrally managed at the land management center.
As a result, according to the present invention, it is possible to concentrate both the ship allocation plan and the cargo handling plan on land, and several skilled workers in the cargo handling plan are arranged on the land, and the cost is low based on the data from each ship. Ship allocation and cargo handling plans can be created easily. In addition, communication between the ship and the land is not required, and the time to planning can be shortened, so that the crew on board does not need to carry out a cargo handling plan that requires abundant experience and knowledge. In addition, cargo handling work can be performed even if there is no skilled person in each ship, and the loading data can be monitored in a semi-real time, so management becomes easy. Furthermore, since the number of times of contact between the ship and the land side is drastically reduced, it is possible to reduce as much as possible the mistakes and mistakes in the contents of communication that accompany this communication. Incidentally, in order to respond favorably to spot-like crude oil negotiations and the like, and to develop such negotiations and the like advantageously, it is necessary to formulate an accurate ship allocation plan and cargo handling plan in a short time. In order to reduce the burden on the ship as much as possible from the viewpoint of ensuring the safety of cargo handling, much support from the land should be incorporated.
[0037]
The invention described in [Claim 2] is the ship fleet control system according to [Claim 1], wherein each ship has various kinds of valves such as a ship valve based on data relating to a cargo handling plan sent from the land management center. Because it has a cargo handling automation system that automatically performs remote operation of equipment,
In addition to the operation and effect of the invention described in [Claim 1], work associated with cargo handling on the ship side can be further facilitated.
[0038]
The invention described in [Claim 3] is the ship fleet control system described in [Claim 1] or [Claim 2], and has a plurality of land management centers, and each land management center is a LAN or a public telephone line. Connected through
In addition to the operations and effects of the invention described in [Claim 1] or [Claim 2], it is possible to provide appropriate information to a ship of a fleet from a plurality of locations.
[0039]
The invention described in [Claim 4] is the ship fleet control system according to any one of [Claim 1] to [Claim 3], wherein communication between the land management center and each ship is a satellite. Since it was done using the communication system,
Data can be exchanged between the fleet ship and the land management center.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram conceptually showing a fleet fleet control system shown in an embodiment of the present invention.
FIG. 2 is a flowchart showing, in a time series, processes executed by each part of the land management center E of FIG.
FIG. 3 is a flowchart showing processing in time series in the fleet control system according to the present embodiment shown in FIG. 1;
FIG. 4 is an explanatory diagram conceptually showing a fleet control system according to another embodiment of the present invention.
FIG. 5 is an explanatory diagram conceptually showing a ship fleet control system according to the prior art.
[Explanation of symbols]
E, E-1, E-2, E-3, E-4, E-5, E-6 Land management center F, G, H Ship 3 Ship planning system 4 Automatic cargo handling planning system 5 Database 8 Cargo handling automation system 13 Data management server 14 Public telephone network 15 Land transceiver station

Claims (4)

In a ship fleet control system that controls the ship allocation plan and cargo handling plan of each ship by exchanging data between a plurality of ships constituting the fleet and the land management center,
The land management center
Each ship's position data, etc. necessary to develop each ship's cargo handling plan, data that changes from moment to moment, attribute data such as shear force and bending moment of each ship, and which tank of which ship is free, etc. In addition to having a database that stores data representing the state of the ship,
Based on the cargo handling order, with reference to tank data of each ship stored in the database, etc., it has an automatic tank allocation function used to select a ship that can handle the cargo handling order, and the distance required for dispatching, A ship assignment planning system that automatically makes a ship assignment plan that can reduce transportation costs as much as possible from time, etc .;
Based on the ship assignment plan provided by this ship assignment plan system and the individual ship data provided from the database, the cargo handling order should not be hindered in the hull attitude, draft and strength of the ship to which the handling order processing is assigned. In addition to formulating a plan, the ship's hull posture, draft, strength, cargo handling quantity, etc. based on the drafted cargo handling plan are comprehensively evaluated by comparing them with target values. In addition, it simulates the hull situation in time series when the actual cargo handling work is performed according to the cargo handling plan finally selected by the user based on the above evaluation, and the result of this simulation is good It is possible to send an automatic loading / unloading planning system that can correct the dispatching plan when there is a defect while transmitting data related to the loading / unloading plan confirmed to each ship. Ship fleet control system according to claim Rukoto. In the ship fleet control system described in [Claim 1],
A ship fleet control system, wherein each ship has a cargo handling automation system that automatically performs remote operation of various devices such as a valve of the ship based on data relating to a cargo handling plan sent from the land management center. In the ship fleet control system described in [Claim 1] or [Claim 2],
A ship fleet control system having a plurality of land management centers, each land management center being connected via a LAN or a public telephone line. In the ship fleet control system according to any one of [Claim 1] to [Claim 3],
A ship fleet control system characterized in that communication between the land management center and each ship is performed using a satellite communication system.

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