JPH05178277A - Automatic planning device for crude oil stowage plan for tanker - Google Patents

Abstract

PURPOSE:To shorten the processing time for design planning by carrying out stowage calculation and synthetic evaluation by referring to the stowage pattern corresponding to the designed space, to a memory circuit, when an access point is included in a registered designed space, in design planning. CONSTITUTION:An input circuit 1 for inputting the crude oil stowage condition including the target quantity of stowage in each kind, stowage order, target trim and draft limit of a tanker is installed in a keyboard A, and a crude oil stowage pattern is generated on the basis of the output of the input circuit 1 by a pattern generation part 2 in a central calculation processing device B. The crude oil stowage pattern is evaluated by a stowage pattern evaluation circuit 4, and on a display C, the evaluation result of the evaluation circuit 4 is outputted into a stowage pattern output circuit 7 through a stowage pattern registration circuit 6. Further, in design planning, if an access point is included in an already registered designed space, the stowage pattern corresponding to the designed space is referred to a memory circuit 2d, and the stowage calculation and overall evaluation are carried out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stowage plan planning apparatus applied to a crude oil tanker or a product tanker, and more particularly to a crude oil stowage plan automatic planer for a tanker that can utilize a stowage plan previously adopted. Regarding the device.

[0002]

2. Description of the Related Art In a conventional crude oil stowage planner for tankers, a comprehensive evaluation is performed by providing an evaluation function for each check item of stowage calculation (strength, posture, dead weight loss), and (Satisfaction) is presented to the operator. This allows the operator to confirm what the unsatisfied conditions are and whether to proceed with compromises as they are, or whether to start the tank stowage pattern again when the operator requests adjustment.
The operator can intervene during the processing,
Processing is advanced and the result is output.

On the other hand, depending on the number of cargoes loaded and the number of tanks,
There are many cases where the combination pattern exceeds 1 million sets, and this pattern is randomly generated to judge pass / fail for each, and the process of pattern generation and pass / fail judgment is continued until a pattern close to the optimum is generated. means,
Alternatively, a means for taking out all the combination patterns from one end and making a pass / fail judgment is adopted.

[0004]

By the way, in the conventional crude oil stowage planner for tanker as described above, similar input data (loading target for loading type, loading order for loading type, target trim, and water saving limit) are used. ), All the possible stowage patterns were created, stowage calculations and evaluations were carried out regardless of the adopted stowage pattern. for that reason,
There is a problem that an extra stowage pattern must be taken into consideration, and a lot of time is consumed for planning. Further, it is extremely difficult for the stowage planning device to output an optimum stowage example that is similar to that of a skilled officer because the rule cannot be completed 100%.

The present invention is intended to solve such a problem, and since it does not consume unnecessary calculation time, it was obtained by the similar input data before when the loading pattern was created. The adoption pattern can be used to eliminate wasteful processing to shorten the processing time, and a skilled officer selects a pattern that is close to the request from his own experience and performs stowage calculation based on this. It is an object of the present invention to provide a crude oil stowage plan automatic planning device for a tanker, which is capable of obtaining a solution that is close to the optimum.

[0006]

In order to achieve the above-mentioned object, the tanker crude oil stowage plan automatic planning apparatus of the present invention comprises:
Tanker demand / condition input circuit that can input the crude oil stowage conditions including the target load amount by tanker, stowage rank by load type, target trim, and water drainage limit, and the crude oil load based on the output signal from the input circuit A pattern generation unit that generates an attached pattern,
A stowage calculation circuit that calculates the hull strength and hull attitude based on the output signal from the pattern generation unit, and a stowage pattern evaluation circuit that evaluates the crude oil stowage pattern based on the output signal from the calculation circuit, The output signal from the input circuit, the output signal from the input circuit, the output signal from the input circuit, the output signal from the input circuit Receiving request vector generating circuit for receiving the loading request vector, a formulating space search circuit for receiving the output signal from the loading request vector generating circuit, and searching the formulating space of the loading pattern, and the searching circuit And a stacking pattern generation circuit capable of generating a stacking pattern by receiving an output signal from the product and outputting the same pattern to the stacking calculation circuit. A stowage pattern storage circuit capable of storing stores stowage pattern in response to an output from the register circuit,
And a reference vector generation circuit capable of generating a reference vector in response to the output from the storage circuit and outputting the reference vector to the defined space search circuit, wherein the defined space search circuit produces a required product based on the information from the reference vector generation circuit. A control system for outputting a command signal to the product pattern storage circuit is provided so that the product pattern is output to the product calculation circuit when the product pattern is selected.

[0007]

In the tanker crude oil stowage plan automatic drafting device of the present invention described above, the stowage pattern adopted in the stowage calculation, which is calculated in the same process as the conventional process, is first accepted from the stowage condition. Is set as a development space to be accessed by a coefficient γ and is registered in the pattern stock, that is, the loaded pattern storage circuit.

After the stowage pattern adopted in the stowage pattern storage circuit is registered, at the time of planning, the acceptance points obtained from the input stowage conditions are already registered. If it is included in the space, the stowage pattern corresponding to the determined space is referred to the stowage pattern storage circuit to perform stowage calculation and comprehensive evaluation.

If the accept points obtained from the input stowage conditions are not included in any of the formulating spaces, a random pattern is created and calculation is performed as in the conventional case. The function of registering the adopted stowage pattern in the stowage pattern storage circuit is performed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following is a description of the tanker crude oil stowage plan automatic planning apparatus as an embodiment of the present invention with reference to the drawings. FIG. 1 is a circuit configuration diagram thereof, FIG.
FIG. 3 is a flow chart of the planning.

Explaining the concept of the formulating space with reference to FIG. 2, the stowage condition corresponding to one stowage pattern is 4
It is described by one factor, total volume, target drainage, target trim, and number of cargoes. The stowage patterns adopted in the past in the stowage plan are registered by setting the point space accessed by the coefficient γ as the design space around the four-dimensional vector having the above four factors as elements, that is, the accept points. That is, the formulating space indicates the allowable range of the degree of similarity with the loading condition corresponding to a certain loading pattern.

Next, the tanker crude oil stowage plan automatic planning device of this embodiment will be described with reference to FIG.

First, the circuit of this embodiment is roughly divided into a keyboard A as an input device, a central processing unit (CPU) B as an arithmetic unit, and a display C as an output device.

In the keyboard A, a loading request / condition input circuit 1 capable of inputting a crude oil loading condition including a load type loading target amount of a tanker, a load type loading order, a target trim, and a water-saving limit. In the central processing unit B, a pattern generator 2 for generating a crude oil stowage pattern based on an output signal from the input circuit 1 and a hull strength and a hull attitude based on an output signal from the pattern generator 2 are provided. And a stowage pattern evaluation circuit 4 that evaluates the crude oil stowage pattern based on an output signal from the stowage calculation circuit 3.

Further, in the display C, an evaluation result output circuit 5 capable of receiving an output signal from the stowage pattern evaluation circuit 4 and outputting the crude oil stowage pattern evaluation result, and an output from the evaluation result output circuit 5 Is provided in the central processing unit B via the product pattern registration circuit 6 provided therein, and a product pattern output circuit 7 for outputting a desired pattern is provided.

Further, the pattern generator 2 receives the output signal from the input circuit 1 and generates a stowage request vector having four quantities, the total volume, the target drainage water, the target trim, and the number of cargo types as a stacking request vector. Output from the request vector circuit 2a, a defined space search circuit 2b that receives an output signal from the same-laden request vector circuit 2a, and searches the formulated space (see FIG. 2) for the stowed pattern, and the formulated space search circuit 2b It is provided with a product pattern generation circuit 2c capable of receiving a signal to generate a product pattern and outputting the same pattern to the product calculation circuit 3. Further, the pattern generation unit 2 receives the output from the stowage pattern registration circuit 7 and can store and store the stowage pattern, and the stowage pattern storage circuit 2d. And a reference vector generation circuit 2e capable of generating a reference vector having quantities as elements and outputting it to the established space search circuit 2b, and the established space search circuit 2b generates a required loading pattern based on the information from the reference vector generation circuit 2e. A control system is provided which outputs a command signal to the product pattern storage circuit 2d so as to output the same product pattern to the product calculation circuit 3 when selected.

In the keyboard A, the stowage pattern is adjusted according to the evaluation result calculated and evaluated based on the stowage pattern output from the stowage pattern storage circuit 2d and output to the evaluation result output circuit 5. A product pattern adjusting circuit 8 capable of inputting a condition for is provided, and the output of the product pattern adjusting circuit 8 is input to the product calculating circuit 3.

With the above-mentioned structure, the tanker crude oil stowage plan automatic planning apparatus of this embodiment carries out the crude oil stowage planning according to the flow shown in FIG.

First, initial conditions (loading target amount by load type, loading order, target trim at each port, water drainage, etc.) are input, and based on the inputs, the total volume, target water drainage, target trim, load, etc. The accept point is obtained from the four factors of the genus number, and which space in the set design space is included is searched.

If there is a planning space to be included, the past adopted stowage pattern is referred to from the retrieved planning space, and stowage calculation is performed. (Control route R in FIG. 1
₁ ) In addition, when there is no formulation space to be included, the stowage pattern generation circuit 2c randomly creates stowage patterns, and the stowage calculation is performed for each. (Control route R _{2 in} FIG. 1) Next, an evaluation function is provided for each of strength, posture, and dead weight loss for comprehensive evaluation. When the stowed patterns are randomly generated, the evaluation states are presented in the order of satisfaction, and the operator selects the patterns.

Then, an adjustment is made by the operator,
It is selected whether to adopt the pattern as it is, and after such operator intervention, the stowage pattern is output. When the stowage pattern is randomly generated, the adopted stowage pattern is registered in the pattern stock (stow pattern storage circuit) 2d together with the input condition.

In this way, according to the tanker crude oil stowage plan automatic drafting apparatus of this embodiment, the adopted stowage pattern is registered together with the initial conditions, and when similar initial conditions are input, Since the past stowage pattern can be referred to, the processing time can be shortened.

There is also an advantage that an expert system can be constructed by accumulating the stowage patterns planned by a skilled officer.

[0024]

As described in detail above, according to the tanker crude oil stowage plan automatic drafting apparatus of the present invention, similar initial conditions are registered by registering the planned adopted stowage patterns together with the initial conditions. When is input, the optimum stowage pattern is created without considering many random stowage patterns, and the processing time can be shortened.

Further, it is possible to accumulate the example of the stowage plan which is carried out by the skilled officer based on the stowed condition given as the pattern example, so that even an inexperienced person can actually plan the plan. An example can be retrieved.

[Brief description of drawings]

FIG. 1 is a circuit configuration diagram of a crude oil stowage plan automatic planning device for a tanker as an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a planning space according to the present invention.

FIG. 3 is a flow chart of planning in the tanker crude oil stowage plan automatic planning apparatus of FIG. 1;

[Explanation of symbols]

1 Loading request / condition input circuit 2 Loading pattern generation unit 2a Loading request vector generation circuit 2b Formulated space search circuit 2c Loading pattern generation circuit 2d Loading pattern storage circuit 2e Normative vector generation circuit 3 Loading calculation circuit 4 Product Pattern evaluation circuit 5 Evaluation result output circuit 6 Product pattern registration circuit 7 Product pattern output circuit 8 Product pattern adjustment circuit A Keyboard B Central processing unit (CPU) C Display R ₁ , R ₂ Control route

Claims (1)

[Claims] Claims: 1. A loading request / condition input circuit capable of inputting a crude oil loading condition including a load type loading target of a tanker, a load type loading order, a target trim, and a drainage restriction, and an output from the input circuit A pattern generator that generates a crude oil stowage pattern based on the signal, a stowage calculation circuit that calculates hull strength and hull attitude based on the output signal from the pattern generator, and the above based on the output signal from the calculation circuit A stowage pattern evaluation circuit that evaluates the crude stowage pattern and a stowage pattern output circuit that receives the output from the stowage pattern evaluation circuit via the stowage pattern registration circuit and outputs the required stowage pattern. The pattern generation unit receives the output signal from the input circuit and generates a stowage request vector, and an output from the stowage request vector generation circuit. A formulating space search circuit that receives a signal to search the formulating space of the stowage pattern and a stowage pattern that can generate a stowage pattern by receiving an output signal from the search circuit and output the same pattern to the stowage calculation circuit And a generating circuit, which receives the output from the stowage pattern registration circuit and can store and store the stowage pattern, and generates an normative vector by receiving the output from the storage circuit. When the prescribed space search circuit selects a required stowage pattern based on the information from the normative vector generation circuit, the stowed pattern is output to the prescribed space search circuit. A control system for outputting a command signal to the stowage pattern storage circuit so as to output to a calculation circuit is provided.
Automatic planning equipment for crude oil stowage plan for tankers.