WO2014128915A1 - 航行解析装置、航行解析方法、プログラム及び記録媒体 - Google Patents
航行解析装置、航行解析方法、プログラム及び記録媒体 Download PDFInfo
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- WO2014128915A1 WO2014128915A1 PCT/JP2013/054510 JP2013054510W WO2014128915A1 WO 2014128915 A1 WO2014128915 A1 WO 2014128915A1 JP 2013054510 W JP2013054510 W JP 2013054510W WO 2014128915 A1 WO2014128915 A1 WO 2014128915A1
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- fuel consumption
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/20—Instruments for performing navigational calculations
- G01C21/203—Specially adapted for sailing ships
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B49/00—Arrangements of nautical instruments or navigational aids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/20—Instruments for performing navigational calculations
Definitions
- the present invention relates to a technique for analyzing fuel consumption in ship navigation.
- Ship navigation is affected by various factors such as weather and sea conditions. For this reason, a ship may not always be able to navigate as planned in advance, and may navigate a route that deviates from the planned route, or temporarily increase or decrease speed (or stop offshore, etc.). Sometimes. Further, if the ship does not navigate as planned, the fuel required for one voyage may vary. If the fuel consumption has increased or decreased from the plan, if the cause of the increase or decrease can be identified, it may be useful for subsequent voyages.
- Patent Document 1 for the purpose of analyzing the cause of the difference in fuel cost to be compared with respect to equipment such as a vehicle, the period of comparison is calculated as the amount of influence for each factor on the fuel cost for a predetermined period. Describes a technique for calculating the difference in fuel cost before and after the replacement by replacing the value of any of the factors.
- the fuel cost factors are fuel consumption, fuel unit price, and mileage.
- JP 2010-267184 A (paragraph 0035 etc.)
- Patent Document 1 Even if the technique described in Patent Document 1 can know the influence of each factor on the fuel cost during the comparison period, it is possible to determine what causes the increase or decrease in the fuel itself. You can't know. On the other hand, an object of the present invention is to make it possible to grasp what factors contribute to increase / decrease in fuel consumption.
- the present invention shows a first acquisition means for acquiring navigation data indicating fuel consumption in navigation of a ship and two or more elements contributing to fluctuations in fuel consumption in the navigation, and a reference fuel consumption. Based on the navigation data and the reference data, second acquisition means for acquiring reference data, and at least one of the two or more elements of the increase / decrease of the fuel consumption indicated by the navigation data with respect to the reference fuel consumption. There is provided a navigation analysis apparatus having a calculation means for calculating an increase / decrease caused by one element and an output means for outputting a calculation result by the calculation means.
- the reference data includes data indicating a relationship between the reference fuel consumption amount and two or more reference elements contributing to fluctuations in the reference fuel consumption amount.
- a configuration may be employed in which the increase / decrease due to the first element is calculated on the basis of the difference.
- the calculation unit may calculate each of the increase / decrease using each of the two or more element values as the first element.
- the reference data includes a plurality of data indicating a relationship between an actual measured value of fuel consumption measured in a voyage different from the certain voyage and the two or more reference elements.
- the calculation means may be configured to specify the reference fuel consumption amount using measured values of a plurality of fuel consumption amounts included in the reference data. Further, in the navigation analysis apparatus according to the present invention, the calculation means may calculate a specific weather condition among a plurality of data indicating a relationship between an actual measured value of fuel consumption included in the reference data and the two or more reference elements. A configuration may be adopted in which the reference fuel consumption amount is specified based on the result of regression analysis using the satisfying data.
- the first acquisition means acquires prediction data indicating a fuel consumption amount and a predicted value of the element in navigation of the ship
- the calculation means includes the prediction data
- a configuration may be adopted in which an increase / decrease caused by at least one element of the two or more elements among the increase / decrease of the fuel consumption indicated by the prediction data with respect to the reference fuel consumption is calculated based on the reference data. Good.
- the second acquisition unit may employ a configuration that acquires, as the reference data, prediction data indicating a fuel consumption amount and a predicted value of the element in navigation of the ship. Good.
- a configuration may be employed in which the element is an element related to at least one of a navigation distance, a boat speed, weather, and a sea state.
- the present invention provides a first step of obtaining navigation data indicating fuel consumption in navigation of a ship and two or more elements contributing to fluctuations in fuel consumption in the navigation, and a reference fuel consumption. And at least one of the two or more elements of the increase / decrease of the fuel consumption indicated by the navigation data with respect to the reference fuel consumption based on the navigation data and the reference data.
- a navigation analysis method having a third step of calculating an increase / decrease due to two elements and a fourth step of outputting a calculation result in the third step.
- the present invention provides a computer with a first process of acquiring navigation data indicating fuel consumption during navigation of a ship and two or more elements that contribute to fluctuations in fuel consumption during the navigation; Based on the second process of acquiring reference data indicating consumption, and the navigation data and the reference data, the two or more elements of the increase / decrease of the fuel consumption indicated by the navigation data with respect to the reference fuel consumption; There is provided a program for executing a third process for calculating an increase / decrease caused by at least one element of the above and a fourth process for outputting a calculation result in the third process.
- the present invention also provides the computer with a first process of acquiring navigation data indicating a fuel consumption amount in navigation of a certain ship and two or more elements contributing to fluctuations in the fuel consumption amount in the navigation.
- a computer-readable program that stores a program for executing a third process for calculating an increase / decrease caused by at least one of the above elements and a fourth process for outputting a calculation result in the third process. Recording medium is provided.
- the figure which shows the whole structure of the navigation analysis system 10 The block diagram which shows the hardware constitutions of the analysis apparatus 500
- the flowchart which shows the process performed in the analyzer 500 Conceptual diagram showing a breakdown of fuel consumption Diagram showing how to calculate standard fuel consumption Diagram for explaining how to calculate fuel consumption increase / decrease due to average ship speed Diagram for explaining how to calculate fuel consumption increase / decrease due to weather Diagram illustrating a voyage report
- the figure which illustrates the display method of the breakdown of the fuel consumption factor The figure which illustrates the display method of the breakdown of the fuel consumption factor
- FIG. 1 is a diagram showing an overall configuration of a navigation analysis system 10 according to an embodiment of the present invention.
- the navigation analysis system 10 is a system for analyzing information related to fuel consumption during navigation of a ship and notifying the user of factors of increase / decrease (increment or decrease) in fuel consumption.
- the navigation analysis system 10 includes a communication device 100, a network 200, a navigation information DB (database) 300, a weather information DB 400, and an analysis device 500.
- the communication device 100 is a device for transmitting ship navigation information.
- the communication device 100 may be mounted on a ship and transmit the navigation information obtained in the ship via satellite communication. However, after the voyage, the communication device 100 records the navigation information obtained in the ship. It may be acquired on land, read and transmitted.
- navigation information refers to information related to navigation from a certain departure point to a certain destination, and data indicating fuel consumption and factors contributing to fluctuations in fuel consumption (hereinafter referred to as “fuel consumption factors”). At least.
- the navigation information includes data that records, for example, port entry date / time, port departure date / time, average ship speed, navigation distance, fuel consumption, and the like.
- the navigation information may be data directly supplied from a measurement device mounted on the ship, or is input by an input device (such as a keyboard) by a human reading the value indicated by the measurement device mounted on the ship. There may be.
- the network 200 is a communication network for realizing communication between devices.
- the network 200 is configured by the Internet or a mobile communication network.
- the network 200 includes a network for performing wireless communication (satellite communication) via a communication satellite.
- the navigation information DB 300 is a database in which navigation information is recorded.
- the navigation information DB 300 is configured to cumulatively record navigation information from a plurality of ships that can be analyzed, and to read them out as necessary.
- the navigation information DB 300 may store not only navigation information on the same route having the same starting point and destination, but also various types of navigation information having different starting points and destinations.
- the navigation information DB 300 does not have to be configured independently of other components, and may be a part of the analysis device 500.
- the weather information DB 400 is a database in which weather information is recorded.
- the weather information refers to information related to weather forecasts in various locations, and includes, for example, data in which forecast values such as weather, wind power (or wind speed), and wind direction are recorded together with the date and time.
- the weather information includes at least information on weather forecasts on the ship's route. Further, the weather information here may include information on sea conditions (sea current, tidal current, wave height, etc.).
- the analysis device 500 is a device for analyzing navigation information.
- the analysis device 500 reads and analyzes necessary navigation information from the navigation information DB 300 according to a user operation, and outputs a report corresponding to the analysis result (hereinafter referred to as “analysis report”).
- the analysis report includes at least the analysis result of the navigation information, and may also include a trend graph of data such as ship speed and fuel consumption rate (hereinafter referred to as “fuel consumption”), general information on the entire voyage, weather map, etc. .
- FIG. 2 is a block diagram illustrating a hardware configuration of the analysis apparatus 500.
- the analysis device 500 includes a control unit 510, a storage unit 520, a communication unit 530, an operation input unit 540, and a display unit 550.
- the analysis device 500 can be realized by, for example, a personal computer that can execute a dedicated application program.
- the control unit 510 is a main means for analyzing navigation information.
- the control unit 510 includes an arithmetic processing device such as a CPU (Central Processing Unit) and a memory, and controls data of the navigation information by executing a predetermined program and controlling the operation of each unit of the analysis device 500. Obtain and output data for displaying analysis reports after analyzing navigation information.
- arithmetic processing device such as a CPU (Central Processing Unit) and a memory
- the storage unit 520 is a means for storing data.
- the storage unit 520 includes a recording medium such as a hard disk or a flash memory, and stores data used by the control unit 510.
- the storage unit 520 can store a program executed by the control unit 510 and plan information described later.
- the communication unit 530 is a means for transmitting / receiving data to / from another device outside the analysis device 500.
- the communication unit 530 receives data from the communication device 100, the navigation information DB 300, and the weather information DB 400 in response to an instruction from the control unit 510.
- the communication unit 530 receives data via the network 200.
- the operation input unit 540 is a means for receiving an input by a user operation.
- the operation input unit 540 may accept an operation with a mouse or a keyboard, or may accept an operation with a touch screen.
- the operation input unit 540 supplies operation information indicating a user operation to the control unit 510.
- Display unit 550 is a means for displaying information.
- the display unit 550 includes a display device such as a liquid crystal display, and displays information (such as an analysis report) according to display data supplied from the control unit 510.
- the display unit 550 does not include a display device and controls display means by supplying display data to a remote display device (or a computer device having a display device) and displaying information (that is, controlling display by the display device). (Means).
- FIG. 3 is a block diagram showing a functional configuration related to analysis of navigation information of the control unit 510.
- the control unit 510 executes a predetermined program and cooperates with other units of the analysis apparatus 500 to realize a first acquisition unit 511, a second acquisition unit 512, a calculation unit 513, and an output unit 514. .
- the first acquisition unit 511 is a unit that acquires navigation data measured during the voyage to be analyzed.
- the navigation data is data included in the navigation information stored in the navigation information DB 300, and includes data indicating the actual measurement value of the fuel consumption and the actual measurement value of the fuel consumption factor in the voyage to be analyzed.
- the fuel consumption element refers to an element relating to the navigation distance, ship speed, weather during navigation, and the like.
- a ship does not always go through a route that is planned in advance. For example, in order to avoid a low atmospheric pressure, a ship may make a detour than a normal route. In such a case, more fuel is consumed than the planned fuel consumption.
- the lower the boat speed the lower the fuel consumption.
- fuel consumption is reduced when navigating at a constant ship speed (that is, with less fluctuation in ship speed). Therefore, from the viewpoint of ship speed, it is desirable to navigate at a constant speed as much as possible without increasing or decreasing speed within a predetermined period and arrive at the destination without waiting for offshore. .
- some ship operators may take actions such as arriving near the destination early in preparation for unexpected situations.
- the actual value of the ship speed is a value measured every predetermined time in the voyage to be analyzed. From this measured value, it is possible to know the average ship speed per voyage and the increase / decrease (ship speed distribution) of the ship speed.
- the actual measurement value is measured, for example, every hour, but may be measured at a longer time interval (every half day, every day, etc.) in the case of a long-distance route.
- wind power is one of the factors that have a relatively large impact on fuel consumption during the voyage.
- a numerical value represented by the Beaufort wind scale can be used.
- the actual measured value of the ship speed is also measured every predetermined time in the voyage to be analyzed.
- the navigation data may include other measured values that can specify the actual fuel consumption or the fuel consumption factor, instead of the actual measurement value of the fuel consumption or the fuel consumption factor. That is, it can be said that the data indicating the actual measurement value is data that can specify the actual measurement value.
- the navigation data may include actual measurement values of the main engine load and the navigation time instead of the fuel consumption itself, and the fuel consumption may be specified by a predetermined calculation.
- the second acquisition means 512 is means for acquiring reference data to be compared with navigation data.
- the reference data includes data indicating a reference value of fuel consumption (reference fuel consumption).
- the reference data is a set of navigation data measured in a voyage indicated by the navigation data, that is, a voyage to be analyzed and a voyage (departure point and destination) that are the same, It is assumed that the information is read from the navigation information DB 300. For example, when the voyage here is a voyage of a regular route, the reference data includes navigation data measured in the past voyage of the route.
- the calculating unit 513 is a unit that compares the navigation data acquired by the first acquiring unit 511 with the reference data acquired by the second acquiring unit 512. Based on the navigation data and the reference data, the calculation means 513 calculates an increase / decrease caused by each fuel consumption element among the increase / decrease in the actual measurement value with respect to the reference fuel consumption. In other words, the calculation means 513 calculates to what extent each fuel consumption factor contributes to an increase or decrease in fuel consumption. Further, as will be described later, the calculation means 513 can specify the reference fuel consumption based on the reference data. The reference fuel consumption can be specified by regression analysis using reference data.
- the output unit 514 is a unit that outputs a calculation result by the calculation unit 513.
- the output unit 514 supplies display data indicating the calculation result by the calculation unit 513 to the display unit 550.
- the display data generated by the output unit 514 includes at least data for displaying the analysis report. Note that the output unit 514 may acquire data other than the calculation result obtained by the calculation unit 513 as necessary according to the content of the analysis report.
- the configuration of the navigation analysis system 10 is as described above.
- a user for example, a ship operator or a land operation person in charge
- the user can obtain an analysis report regarding the voyage by designating the voyage to be analyzed.
- FIG. 4 is a flowchart showing processing executed in the analysis apparatus 500 at this time.
- the control unit 510 of the analysis apparatus 500 receives an analysis report creation instruction (step S1).
- Control unit 510 can receive a user's operation input by acquiring operation information from operation input unit 540.
- the user can designate a voyage by the departure point and destination, date and time, the name of the ship or the route, etc., and can also search the voyage to be analyzed using the navigation information DB 300. Further, the user may specify one or a plurality of fuel consumption elements to be displayed in the analysis report.
- the control unit 510 When receiving the analysis report creation instruction, the control unit 510 acquires necessary data.
- the control unit 510 identifies the voyage designated by the user, acquires the navigation data measured in the identified voyage from the navigation information DB 300 (step S2), and further compares the acquired navigation data with other navigation data. Navigation information is specified, and this is acquired from the navigation information DB 300 as reference data (step S3).
- step S2 and step S3 are displayed as separate steps, but control unit 510 may acquire navigation data and reference data at the same time.
- control unit 510 calculates a difference from the reference value of the actual measured value of fuel consumption in the voyage to be analyzed, and calculates an increase / decrease for each fuel consumption element from the difference (that is, an increase / decrease) (step S4). ). Then, control unit 510 generates display data including the calculation result in step S4 and supplies the display data to display unit 550 to display an analysis report corresponding to the display data (step S5).
- the outline of the processing by the analysis apparatus 500 is as described above.
- a specific method for analyzing navigation data by the analysis apparatus 500 will be described in more detail with an example.
- the voyage to be analyzed is a regular route and there is comparable past navigation information.
- FIG. 5 is a conceptual diagram showing a breakdown of fuel consumption.
- the vertical axis represents average fuel consumption
- the horizontal axis represents navigation time.
- fuel efficiency refers to the ratio of navigation time to fuel consumption, and is expressed, for example, by the weight of fuel per day (tons per day). At this time, the fuel consumption can be expressed by the product of the average fuel consumption and the total navigation time.
- the breakdown of the fuel consumption shown in the figure is merely a conceptual diagram, and the area does not necessarily indicate an actual ratio.
- “reference fuel consumption” indicates the fuel consumption when it is assumed that there is no increase / decrease due to the fuel consumption factor. Therefore, in this case, if a ship navigates at an ideal constant speed under ideal weather conditions according to a predetermined navigation time, its fuel consumption is equivalent to the "reference fuel consumption”. .
- the reference value for the fuel consumption is determined based on the fuel consumption determined in this way.
- the increase in fuel consumption can be broken down into several fuel consumption elements.
- the main fuel consumption elements are the four elements of “navigation distance”, “average ship speed”, “weather” and “ship speed distribution”.
- the fuel consumption element of “Others” is shown in the figure, but here, there are ocean currents, tidal currents, trims (differences between bow draft and stern draft), and loading of cargo. Appending etc. may be included.
- the increase / decrease due to the “other” fuel consumption factor is the “travel distance”, “average ship speed”, “weather” and “ship speed allocation”. It is assumed that it is other than the increase / decrease due to the four elements.
- FIG. 6 is a diagram showing a standard fuel consumption calculation method.
- the vertical axis shows the fuel consumption of the ship (Fuel Oil Consumption Rate), and the horizontal axis shows the average ship speed (ground ship speed).
- each point in the figure is the average ship speed and fuel consumption measurement values obtained from the reference data, and shows the measurement values under various weather conditions, but the actual measurement values are more than shown There can be many.
- curve regression curve fitting
- a curve C1 is obtained. That is, the curve C1 shows an average relationship between the average ship speed and the fuel consumption.
- a curve C2 is obtained.
- a curve C2 is a curve obtained by using measured values when the weather conditions are relatively good.
- the best weather condition for example, no wind or tail wind
- a curve C3 is obtained, and the weather condition is worst (for example, When only the head wind) is extracted and curve regression is performed, a curve C4 is obtained.
- the fuel consumption is proportional to the cube of the ship speed, and the curves C1 to C4 are cubic curves.
- the curve C3 is less fuel efficient when the average ship speed is the same as the curve C4.
- the fuel consumption indicated by the curve C2 is regarded as ideal, and this is used as a reference value.
- the reference value of the fuel consumption is obtained by substituting the reference value of the average ship speed into the function indicated by the curve C2, and the reference value of the navigation time (the navigation distance) (The value obtained by dividing the reference value by the reference value of the average ship speed).
- the analysis apparatus 500 calculates the reference value of the fuel consumption amount by executing such a calculation.
- the reference data indicates the relationship between the reference fuel consumption (reference fuel consumption) and two or more fuel consumption elements (reference elements) that contribute to fluctuations in the reference fuel consumption.
- Any specific data format can be used as long as it can indicate the reference fuel consumption according to the combination of the values.
- the reference data is data representing a function corresponding to the curve C2 here, but even if it is a look-up table that returns unique fuel consumption values when given values of a plurality of fuel consumption elements. Good.
- the curve that determines the reference value does not necessarily have to be the curve C2 (that is, Beaufort wind class 2 or lower).
- the curve C1 that is, the average relationship between the average ship speed and the fuel consumption, can be used as a reference, and the measured value of the Beaufort wind class that is equal to or smaller than a predetermined value (other than 2) is extracted.
- the reference value may be determined based on this.
- the analysis device 500 When the analysis device 500 specifies the curve C2 and specifies the reference value of the fuel consumption amount, the analysis device 500 results from four fuel consumption elements of “navigation distance”, “average ship speed”, “weather”, and “ship speed distribution”. It is possible to calculate the increase / decrease in fuel consumption. More specifically, the analysis apparatus 500 sets the fuel consumption obtained from the reference data (curve C2) using each reference value as the value of each fuel consumption element as the reference value of the fuel consumption, and each fuel consumption. Only the value of the specific fuel consumption element among the element values is replaced with the actual measurement value, and the fuel consumption obtained from the reference data (curve C2) is compared with the reference value obtained previously, and the specific consumption is determined based on the difference. Increase / decrease in fuel consumption due to fuel consumption factors is calculated. A specific calculation method for the increase / decrease in the fuel consumption due to each fuel consumption element is as follows.
- the increase / decrease in the fuel consumption resulting from the navigation distance is obtained by multiplying the reference value of the fuel consumption obtained from the curve C2 by the difference between the actual value of the navigation time and the reference value.
- the actual measured value of the average ship speed is the same as the reference value. That is, the difference between the measured value of the navigation time and the reference value is a value obtained by dividing the difference between the measured value of the navigation distance and the reference value by the reference value of the average ship speed.
- FIG. 7 is a diagram for explaining a method of calculating an increase / decrease in fuel consumption due to the average ship speed.
- the fuel consumption increase / decrease (FOC speed ) due to the average ship speed is the following when the fuel consumption calculated by substituting the actual value of the average ship speed into the function indicated by the curve C2 is the actual value of fuel consumption: It is calculated
- FOCR 0 indicates a reference value of fuel consumption
- ⁇ FOCR speed indicates a difference (FOCR ⁇ FOCR 0 ) between the actually measured value of fuel consumption and the reference value.
- NT 0 indicates a reference value of navigation time
- NT indicates an actual value of navigation time.
- the FOC speed is calculated from the formula (1.1) when the actual ship speed is faster than the standard ship speed, and the formula (1.2) when the actual ship speed is slower than the standard ship speed. Are each required.
- FOC speed ⁇ FOCR speed ⁇ NT ⁇ FOCR ⁇ (NT 0 ⁇ NT) (1.1)
- FOC speed ⁇ FOCR speed ⁇ NT 0 ⁇ FOCR ⁇ (NT 0 ⁇ NT) (1.2)
- the first term ( ⁇ FOCR speed ⁇ NT) on the right side of the equation (1.1) represents the change in fuel consumption due to the fuel consumption increased by the increase in the average ship speed
- the second term on the right side of the equation (1.1) represents a change in the fuel consumption due to the navigation time decreased by the increase in the average ship speed.
- the first term ( ⁇ FOCR speed ⁇ NT 0 ) on the right side of the equation (1.2) represents the change in fuel consumption due to the fuel consumption decreased due to the decrease in the average ship speed
- the second term ( ⁇ FOCR ⁇ (NT 0 ⁇ NT)) represents the change in fuel consumption due to the increased navigation time due to the decrease in average ship speed.
- the value of FOC speed becomes a positive value when the average ship speed is higher than the reference value, and becomes a negative value when the average ship speed is lower than the reference value. That is, when navigating at a lower average ship speed than the reference value, the fuel consumption is less than the reference value. In this way, the analysis device 500 can calculate the increase / decrease in the fuel consumption resulting from the average ship speed.
- FIG. 8 is a diagram illustrating a curve C5 and a curve C2 obtained from the actually measured values.
- the curve C5 is closer to the curve C2 as the weather on the voyage to be analyzed is closer to the ideal weather.
- the curve C5 is a curve located on the right side of the curve C2 if the weather in the voyage to be analyzed is better than the ideal weather, and the curve C5 is curved if the weather in the voyage to be analyzed is worse than the ideal weather.
- the curve is located on the left side of C2.
- the increase / decrease (FOC weather ) of the fuel consumption caused by the weather is obtained by the following equation (2).
- ⁇ FOCR weather indicates the difference between the actual value of fuel consumption obtained from FIG. 8 and the reference value
- NT indicates the actual value of navigation time. That is, the FOCR weather is a value obtained by subtracting the reference value of the fuel consumption from the fuel consumption when it is assumed that the navigation can be performed at the average ship speed according to the reference value under the actual weather condition indicated by the actually measured value.
- FOC weather ⁇ FOCR weather ⁇ NT (2)
- the contribution of ship speed distribution to fuel consumption can be calculated using curve C2 obtained from reference data.
- the analysis device 500 first calculates the fuel consumption when navigating at a constant speed, that is, when the ship speed distribution is ideal, by substituting the actual value of the average ship speed into the function indicated by the curve C2. Multiply the measured value of the navigation time to calculate the fuel consumption when the ship speed distribution is ideal. Subsequently, the analysis apparatus 500 substitutes the actual value of the ship speed measured every predetermined time (instead of the average ship speed) into the function indicated by the curve C2, so that the fuel consumption and fuel consumption per predetermined time are calculated.
- the fuel consumption amount reflecting the actual ship speed distribution is calculated by calculating the amount and integrating the amount, and the difference between this and the fuel consumption amount when the ship speed distribution is ideal is calculated.
- the difference calculated in this way corresponds to an increase / decrease in fuel consumption due to ship speed distribution.
- FIG. 9 is a diagram illustrating an analysis report output as an analysis result.
- FIG. 10 is a diagram exemplifying factor analysis included in the analysis report, that is, a breakdown of increase / decrease in fuel consumption.
- the analysis report includes a bar graph representing the increase / decrease for each fuel consumption element as shown in FIG.
- the analysis apparatus 500 may display the breakdown obtained from the actual measurement value and the past average value so that the user can compare them.
- the breakdown of the increase / decrease in the fuel consumption may be displayed in the analysis report by a method other than a bar graph, such as a table describing each numerical value.
- not all of the fuel consumption elements shown in FIG. 10 but only one or a plurality of specific fuel consumption elements designated as display targets by the user may be displayed by a bar graph or the like.
- the navigation analysis system 10 it is possible to allow the user to understand what factors (fuel consumption factors) contribute to the increase or decrease in fuel consumption.
- the user can analyze the factors that increase or decrease the fuel consumption by performing such an analysis based on the navigation data (that is, the actual measurement value) obtained by the voyage, and improve the voyage thereafter. Can be done.
- the user can distinguish the habits and characteristics of the navigation of each individual operator by comparing the analysis report of one operator with the analysis report of another operator.
- the present invention can be applied not only to analysis after voyage but also to analysis before voyage.
- a user may create a voyage plan prior to voyage on a ship.
- the user predicts the fuel consumption and the fuel consumption factor in advance, and inputs the prediction data to the analysis device 500 as a prediction data, thereby comparing the predicted value of the fuel consumption and the fuel consumption factor with the reference value. It is possible to perform the same analysis as in the case of actual measurement values. In this way, it is possible to make use of the present invention for creating and correcting a voyage plan.
- the analysis apparatus 500 receives input of plan information including the above-described prediction data.
- a predicted value related to the weather may be input by the user, but the weather information corresponding to the planned route may be read from the weather information DB 400 and used.
- the navigation analysis system 10 may be configured without including the weather information DB 400 if the analysis by the predicted value is not performed.
- the analysis device 500 may perform analysis based on a predicted value instead of the actual measurement value, or may perform both analysis based on the actual measurement value and analysis based on the predicted value.
- the analysis apparatus 500 may display an analysis report in which the analysis result obtained by comparing the actual measurement value with the reference value and the analysis result obtained by comparing the predicted value with the reference value are displayed together. Is possible.
- FIG. 11 is a diagram illustrating an analysis report in which these analysis results are written together.
- the reference value in the present invention may not be obtained based on the actual navigation of the ship.
- the reference value may be a fictitious numerical value obtained by computer simulation or the like.
- a marine trial run (test) is carried out using an actual ship, and the ship speed and combustion consumption are measured at that time, or data obtained from a model test (water tank test) at the time of ship design is used. By doing so, it is possible to create reference data.
- the reference data is not given as a set of measurement values as described above, but may be given as a function calculated so as to return a desired reference value according to an input variable.
- the above-described predicted value may be used as a reference value (reference data), and the measured value may be compared with the predicted value and analyzed.
- reference value reference data
- the present invention can be applied to a cruise on an irregular route in which there are (or few) past measured values.
- the fuel consumption factors for which the breakdown is calculated are not limited to four, ie, “navigation distance”, “average ship speed”, “meteorology”, and “ship speed distribution”. It may be.
- sea conditions may be used as fuel consumption elements, and weather and sea conditions may be used as fuel consumption elements.
- the weather and sea conditions may be further subdivided, and individual breakdowns may be calculated by using wind power, wind direction, tidal current, ocean current, wave height, etc. as fuel consumption factors.
- an estimated value can be used as the fuel consumption element instead of the actual measurement value. For example, if the position (latitude and longitude) of a ship at a certain time can be specified, this can be estimated even if the weather at that time is not actually measured. It is possible to use.
- the reference fuel consumption can be specified by a method other than regression analysis.
- the reference fuel consumption is calculated by estimating the influence of the weather (that is, increase or decrease of the fuel consumption) for each of the measurement values shown in FIG. 6 and excluding the influence of the weather from the measurement value of the fuel consumption. Is also possible.
- the analysis target may be a part of the voyage from the starting point to the destination, instead of the entire voyage.
- the analysis apparatus 500 may analyze navigation in a specific sea area in a certain voyage, or may divide the entire voyage into several sea areas and perform analysis for each sea area.
- the output in the present invention is not limited to visualizing the fuel consumption, but may represent the fuel cost by a numerical value or a graph. In this case, by multiplying the fuel consumption calculated by the calculation means or the increase / decrease thereof by the unit price of the fuel, the fuel cost or the increase / decrease can be shown to the user, and the analysis can be performed.
- the form of the navigation analysis apparatus according to the present invention is not limited to the analysis apparatus 500 described above.
- the navigation analysis device according to the present invention may be realized by a server device connected to a network, and the user may access the server device via a client device (personal computer, smartphone, etc.).
- the analysis report is described in HTML (HyperText Markup Language) or the like and may be provided in the form of a web page or in the form of an e-mail.
- the present invention is specified not only as a navigation analysis device or a navigation analysis system equipped with the same, but also as a navigation analysis method using the navigation analysis device, a program for causing a computer to function as the navigation analysis device of the present invention, and the like. May be.
- the program according to the present invention can be provided in a form recorded on a recording medium such as an optical disc, or a form that is downloaded to a computer via a network such as the Internet, and can be installed and used. .
- DESCRIPTION OF SYMBOLS 10 ... Navigation analysis system, 100 ... Communication apparatus, 200 ... Network, 300 ... Navigation information DB, 400 ... Weather information DB, 500 ... Analysis apparatus, 510 ... Control part, 511 ... First acquisition means, 512 ... Second Acquiring means, 513 ... calculating means, 514 ... output means, 520 ... storage section, 530 ... communication section, 540 ... operation input section, 550 ... display section
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Abstract
Description
これに対し、本発明は、燃料消費量の増減にどのような要素が寄与しているのかを把握できるようにすることを目的とする。
また、本発明に係る航行解析装置において、前記算出手段は、前記2以上の要素の値のそれぞれを前記第1の要素として用いて各々の前記増減分を算出する構成が採用されてもよい。
また、本発明に係る航行解析装置において、前記基準データは、前記ある航海とは別の航海において計測された燃料消費量の実測値と前記2以上の基準要素との関係を示すデータを複数含み、前記算出手段は、前記基準データに含まれる複数の燃料消費量の実測値を用いて前記基準燃料消費量を特定する構成が採用されてもよい。
また、本発明に係る航行解析装置において、前記算出手段は、前記基準データに含まれる燃料消費量の実測値と前記2以上の基準要素との関係を示す複数のデータのうち特定の気象条件を満たすデータを用いた回帰分析の結果に基づいて前記基準燃料消費量を特定する構成が採用されてもよい。
また、本発明に係る航行解析装置において、前記第1の取得手段は、前記船舶の航行における燃料消費量及び前記要素の予測値を示す予測データを取得し、前記算出手段は、前記予測データ及び前記基準データに基づいて、当該予測データが示す燃料消費量の前記基準燃料消費量に対する増減分のうち前記2以上の要素の少なくとも1つの要素に起因する増減分を算出する構成が採用されてもよい。
また、本発明に係る航行解析装置において、前記第2の取得手段は、前記船舶の航行における燃料消費量及び前記要素の予測値を示す予測データを前記基準データとして取得する構成が採用されてもよい。
また、本発明に係る航行解析装置において、前記要素は、航行距離、船速、気象及び海象の少なくともいずれかに関する要素である構成が採用されてもよい。
図1は、本発明の一実施形態である航行解析システム10の全体構成を示す図である。航行解析システム10は、船舶の航行における燃料消費量に関する情報を解析し、燃料消費量の増減分(増分又は減分)の要因をユーザに知らせるためのシステムである。航行解析システム10は、通信装置100と、ネットワーク200と、航行情報DB(データベース)300と、気象情報DB400と、解析装置500とを備える。
航行距離に起因する燃料消費量の増減分は、曲線C2から得られる燃費の基準値に対し、航行時間の実測値と基準値の差分を乗じることによって求められる。ただし、ここにおいて、平均船速の実測値は基準値と同一であるとする。すなわち、航行時間の実測値と基準値の差分は、航行距離の実測値と基準値の差分を平均船速の基準値で除した値である。
図7は、平均船速に起因する燃料消費量の増減分の算出方法を説明するための図である。平均船速に起因する燃料消費量の増減分(FOCspeed)は、曲線C2で示される関数に平均船速の実測値を代入して算出した燃費を燃費の実測値とした場合に、以下の(1.1)式又は(1.2)式により求められる。同式において、FOCR0は燃費の基準値を示し、ΔFOCRspeedは燃費の実測値と基準値との差分(FOCR-FOCR0)を示す。また、NT0は航行時間(Navigation Time)の基準値を示し、NTは航行時間の実測値を示す。FOCspeedは、実際の船速が基準となる船速よりも速い場合には(1.1)式より、実際の船速が基準となる船速よりも遅い場合には(1.2)式より、それぞれ求められる。
FOCspeed=ΔFOCRspeed×NT-FOCR×(NT0-NT) …(1.1)
FOCspeed=ΔFOCRspeed×NT0-FOCR×(NT0-NT) …(1.2)
気象に起因する燃料消費量の増減分を算出するためには、解析装置500は、曲線C1~C4と同様の要領で、航行データに含まれる実測値によって曲線回帰を行う。
図8は、実測値から得られる曲線C5と曲線C2とを例示する図である。曲線C5は、解析対象の航海における気象が理想的な気象に近いほど、曲線C2に近付く。また、曲線C5は、解析対象の航海における気象が理想的な気象よりも良ければ、曲線C2よりも右側に位置する曲線となり、解析対象の航海における気象が理想的な気象よりも悪ければ、曲線C2よりも左側に位置する曲線となる。
FOCweather=ΔFOCRweather×NT …(2)
図6に示されるように、燃費は船速に対して比例的には増加せず、船速の3乗にほぼ比例することが知られている。したがって、船速が2倍になった場合、燃費は2倍にはならず、2倍よりも多くなる。よって、ある決められた距離を所定の制限時間内に航行する場合には、決められた距離を制限時間ちょうどで航行できる船速のまま定速で航行すれば、最も低燃費な航海が可能になる。また、平均船速としては同じであったとしても、増速・減速を繰り返したり、制限時間よりも大幅に早く目的地に到着して長期間沖待ち(停泊)したりした場合には、定速で航行した場合よりも燃費が低下する。
本発明は、上述した実施形態に限定されず、以下の変形例のような他の形態でも実施可能である。また、以下に示す変形例は、必要に応じて、各々を適宜に組み合わせて実施することも可能である。
本発明は、航海後の解析のみならず、航海前の解析にも適用可能である。例えば、ユーザは、ある船舶での航海に先立って航海計画を作成することがある。このとき、ユーザは、燃料消費量や燃料消費要素について事前に予測し、これを予測データとして解析装置500に入力することで、燃料消費量や燃料消費要素の予測値をその基準値と比較し、実測値の場合と同様の分析を行うことが可能である。このようにすれば、本発明を航海計画の作成や修正に役立てることが可能である。
本発明における基準値は、船舶の実際の航行に基づいて得られたものでなくてもよい。例えば、基準値は、コンピュータ・シミュレーションなどによって求められる架空の数値であってもよい。あるいは、実際の船舶を用いて海上試運転(試験)を実施し、その際に船速や燃焼消費量を計測したり、船舶の設計時の模型試験(水槽試験)で得られるデータを利用したりすることによって基準データを作成することも可能である。また、基準データは、上述したような計測値の集合として与えられるのではなく、所望する基準値を入力する変数に応じて返すように計算された関数として与えられてもよい。
本発明において内訳が算出される燃料消費要素は、「航行距離」、「平均船速」、「気象」及び「船速配分」の4つに限定されず、その数も2以上であればいくつであってもよい。例えば、気象に代えて海象を燃料消費要素としてもよいし、気象及び海象を燃料消費要素としてもよい。また、気象や海象をより細分化し、風力、風向、潮流、海流、波高などを燃料消費要素とし、個々の内訳を算出してもよい。さらには、トリムや積み付けのような船体の状態を燃料消費要素とし、その内訳を算出することも可能である。
本発明において、基準燃料消費量は、回帰分析以外の手法によっても特定可能である。例えば、基準燃料消費量は、図6に示した計測値のそれぞれについて、気象による影響(すなわち燃料消費量の増減)を推定し、燃費の計測値から気象による影響を除外することによって算出することも可能である。
本発明において解析対象とするのは、出発地から目的地までの航海全体ではなく、その一部であってもよい。例えば、解析装置500は、ある航海のうち特定の海域における航行について解析を行ってもよいし、航海全体をいくつかの海域に区切って、その海域毎に解析を行ってもよい。
本発明における出力は、燃料消費量を視覚化するものに限らず、燃料代を数値やグラフによって示すものであってもよい。この場合、算出手段により算出された燃料消費量ないしその増減分に燃料の単価を乗算すれば、燃料代ないしその増減分をユーザに示すことが可能となり、その分析が可能となる。
本発明に係る航行解析装置の形態は、上述した解析装置500のようなものに限定されない。例えば、本発明に係る航行解析装置は、ネットワークに接続されたサーバ装置によって実現され、ユーザがこのサーバ装置にクライアント装置(パーソナルコンピュータ、スマートフォンなど)を介してアクセスするような形態であってもよい。この場合において、解析レポートは、HTML(HyperText Markup Language)などによって記述され、ウェブページの形態で提供されてもよいし、電子メールの形態で提供されてもよい。
Claims (11)
- ある船舶の航行における燃料消費量と、当該航行における燃料消費量の変動に寄与する2以上の要素とを示す航行データを取得する第1の取得手段と、
基準燃料消費量を示す基準データを取得する第2の取得手段と、
前記航行データ及び前記基準データに基づいて、当該航行データが示す燃料消費量の前記基準燃料消費量に対する増減分のうち前記2以上の要素の少なくとも1つの要素に起因する増減分を算出する算出手段と、
前記算出手段による算出結果を出力する出力手段と
を有する航行解析装置。 - 前記基準データは、前記基準燃料消費量と前記基準燃料消費量の変動に寄与する2以上の基準要素との関係を示すデータからなり、
前記算出手段は、前記基準燃料消費量と、前記2以上の要素のうち第1の要素の値として前記航行データを用い、第2の要素の値として前記基準要素を用いて前記基準データから求められた燃料消費量との差分に基づいて、当該第1の要素に起因する前記増減分を算出する
請求項1に記載の航行解析装置。 - 前記算出手段は、前記2以上の要素の値のそれぞれを前記第1の要素として用いて各々の前記増減分を算出する
請求項2に記載の航行解析装置。 - 前記基準データは、前記ある航海とは別の航海において計測された燃料消費量の実測値と前記2以上の基準要素との関係を示すデータを複数含み、
前記算出手段は、前記基準データに含まれる複数の燃料消費量の実測値を用いて前記基準燃料消費量を特定する
請求項2又は3に記載の航行解析装置。 - 前記算出手段は、前記基準データに含まれる燃料消費量の実測値と前記2以上の基準要素との関係を示す複数のデータのうち特定の気象条件を満たすデータを用いた回帰分析の結果に基づいて前記基準燃料消費量を特定する
請求項4に記載の航行解析装置。 - 前記第1の取得手段は、前記船舶の航行における燃料消費量及び前記要素の予測値を示す予測データを取得し、
前記算出手段は、前記予測データ及び前記基準データに基づいて、当該予測データが示す燃料消費量の前記基準燃料消費量に対する増減分のうち前記2以上の要素の少なくとも1つの要素に起因する増減分を算出する
請求項1ないし5のいずれか1項に記載の航行解析装置。 - 前記第2の取得手段は、前記船舶の航行における燃料消費量及び前記要素の予測値を示す予測データを前記基準データとして取得する
請求項1ないし5のいずれか1項に記載の航行解析装置。 - 前記要素は、航行距離、船速、気象及び海象の少なくともいずれかに関する要素である
請求項1ないし7のいずれか1項に記載の航行解析装置。 - ある船舶の航行における燃料消費量と、当該航行における燃料消費量の変動に寄与する2以上の要素とを示す航行データを取得する第1のステップと、
基準燃料消費量を示す基準データを取得する第2のステップと、
前記航行データ及び前記基準データに基づいて、当該航行データが示す燃料消費量の前記基準燃料消費量に対する増減分のうち前記2以上の要素の少なくとも1つの要素に起因する増減分を算出する第3のステップと、
前記第3のステップにおける算出結果を出力する第4のステップと
を有する航行解析方法。 - コンピュータに、
ある船舶の航行における燃料消費量と、当該航行における燃料消費量の変動に寄与する2以上の要素とを示す航行データを取得する第1の処理と、
基準燃料消費量を示す基準データを取得する第2の処理と、
前記航行データ及び前記基準データに基づいて、当該航行データが示す燃料消費量の前記基準燃料消費量に対する増減分のうち前記2以上の要素の少なくとも1つの要素に起因する増減分を算出する第3の処理と、
前記第3の処理における算出結果を出力する第4の処理と
を実行させるためのプログラム。 - コンピュータに、
ある船舶の航行における燃料消費量と、当該航行における燃料消費量の変動に寄与する2以上の要素とを示す航行データを取得する第1の処理と、
基準燃料消費量を示す基準データを取得する第2の処理と、
前記航行データ及び前記基準データに基づいて、当該航行データが示す燃料消費量の前記基準燃料消費量に対する増減分のうち前記2以上の要素の少なくとも1つの要素に起因する増減分を算出する第3の処理と、
前記第3の処理における算出結果を出力する第4の処理と
を実行させるためのプログラムを記憶するコンピュータ読み取り可能な記録媒体。
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WO2017056317A1 (ja) * | 2015-10-02 | 2017-04-06 | 日本郵船株式会社 | 推定値算出装置、推定値算出方法、プログラム及び記録媒体 |
JPWO2017056317A1 (ja) * | 2015-10-02 | 2017-10-05 | 日本郵船株式会社 | 推定値算出装置、推定値算出方法、プログラム及び記録媒体 |
JP2019010984A (ja) * | 2017-06-30 | 2019-01-24 | 川崎重工業株式会社 | 船舶性能解析システムおよび船舶性能解析方法 |
JP2019014409A (ja) * | 2017-07-10 | 2019-01-31 | 川崎重工業株式会社 | 監視システム |
JP7067997B2 (ja) | 2018-03-28 | 2022-05-16 | 住友重機械マリンエンジニアリング株式会社 | 船舶情報提供装置、船舶情報提供プログラム、記憶媒体、船舶情報提供方法、及び船舶情報提供システム |
JP2019172073A (ja) * | 2018-03-28 | 2019-10-10 | 住友重機械マリンエンジニアリング株式会社 | 船舶情報提供装置、船舶情報提供プログラム、記憶媒体、船舶情報提供方法、及び船舶情報提供システム |
CN113665761A (zh) * | 2018-03-28 | 2021-11-19 | 住友重机械海洋工程株式会社 | 船舶信息提供装置、方法、系统、程序及存储介质 |
KR20190113568A (ko) * | 2018-03-28 | 2019-10-08 | 스미도모쥬기가이 마린 엔지니어링 가부시키가이샤 | 선박 정보 제공 장치, 선박 정보 제공 프로그램, 기억 매체, 선박 정보 제공 방법, 및 선박 정보 제공 시스템 |
KR102686734B1 (ko) * | 2018-03-28 | 2024-07-18 | 스미도모쥬기가이 마린 엔지니어링 가부시키가이샤 | 선박 정보 제공 장치, 선박 정보 제공 프로그램, 기억 매체, 선박 정보 제공 방법, 및 선박 정보 제공 시스템 |
CN113665761B (zh) * | 2018-03-28 | 2024-09-10 | 住友重机械海洋工程株式会社 | 船舶信息提供装置、方法、系统、程序及存储介质 |
WO2021106096A1 (ja) * | 2019-11-27 | 2021-06-03 | 株式会社アース・ウェザー | 船舶のルーティング予測システム、及び当該ルーティング予測システムに用いるプログラム |
JP6895700B1 (ja) * | 2019-11-27 | 2021-06-30 | 株式会社アース・ウェザー | 船舶のルーティング予測システム、及び当該ルーティング予測システムに用いるプログラム |
US11761768B2 (en) | 2019-11-27 | 2023-09-19 | Earth Weather, Inc. | Route navigation system for ships, and a program thereof |
Also Published As
Publication number | Publication date |
---|---|
FI20155663A (fi) | 2015-09-16 |
SG11201506666VA (en) | 2015-09-29 |
JPWO2014128915A1 (ja) | 2017-02-02 |
JP5543037B1 (ja) | 2014-07-09 |
FI127931B (fi) | 2019-05-31 |
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