JP2017090196A - System for correcting wind direction and wind speed, system for presenting wind direction and wind speed, method for correcting wind direction and wind speed, method for presenting wind direction and wind speed, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system for calculating an accurate wind direction and an accurate wind speed from the actual wind direction and wind speed obtained in a moving ship.SOLUTION: The wind direction wind speed correction system includes: an actual value acquisition part, that acquires the actual values of a wind direction and a wind speed; and an actual value correction part, that corrects influence of change in the wind direction and the wind speed on the actual values caused by an environment in which measuring means for measuring the actual values is set.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a wind direction and wind speed correction system, a wind direction and wind speed presentation system, a wind direction and wind speed correction method, a wind direction and wind speed presentation method, and a program.

  The fuel efficiency of passenger ferry operations varies greatly depending on climatic conditions and ship operating methods. For example, Patent Literature 1 describes an operation support system that performs power demand prediction using a passenger ship energy prediction model, weather and sea state prediction data, and a route plan, and presents an operation plan that optimizes fuel consumption efficiency.

JP 2014-127045 A

  By the way, when calculating the fuel consumption and the optimum course of a ship, it is necessary to consider the wind resistance received by the hull. Conventionally, the resistance value was calculated using the wind speed measured by the anemometer installed on the ship. However, the value measured by the anemometer mounted on the ship is affected by air turbulence that occurs when the wind hits the hull, and may not be an accurate value. There is a problem that an accurate value cannot be calculated even if the resistance value is calculated using such wind direction and wind speed information.

  Therefore, an object of the present invention is to provide a wind direction and wind speed correction system, a wind direction and wind speed presentation system, a wind direction and wind speed correction method, a wind direction and wind speed presentation method, and a program that can solve the above-described problems.

The first aspect of the present invention is the influence of changes in wind direction and wind speed that occur in the actual measurement values in an environment in which an actual measurement value acquisition unit that acquires actual measurement values of wind direction and wind speed and a measurement unit that measures the actual measurement values are installed. A wind direction and wind speed correction system including an actual value correction unit that corrects.
According to such a configuration, it is possible to perform more accurate calculation of the wind direction and the wind speed while reducing the influence on the actually measured values of the wind direction and the wind speed caused by the environment in which the measuring unit is installed.

The actual measurement value acquisition unit according to the second aspect of the present invention acquires an actual measurement value of a wind direction / wind speed measured by an anemometer mounted on a ship that navigates within a predetermined range, and the actual measurement value correction unit includes: Based on the correction amount determined in association with the wind direction / wind speed information measured in the ship, the change in the wind direction / wind speed caused by the ship structure in the actually measured value is corrected.
According to such a configuration, an actual measurement value measured by a ship navigating within a predetermined range, a measurement value obtained by an anemometer mounted on the ship, and a correction specific to the ship associated with the wind direction / wind speed information. Since it can be corrected by the amount, a value closer to the wind direction / velocity of the wind that is actually blowing can be calculated.

The wind direction and wind speed correction system in the third aspect of the present invention includes an analysis value acquisition unit that acquires analysis value information of wind direction and wind speed at a plurality of points in a predetermined range, and correction in which the actual measurement value correction unit corrects the actual measurement value. And an analysis value complementing unit that adds the subsequent wind direction / wind speed information as the wind direction / wind speed information at the measurement position of the actual measurement value included in the predetermined range to complement the analysis value information.
According to such a configuration, the analysis value information of the wind direction / wind speed at a plurality of points in a predetermined range can be further refined using accurate wind direction / wind speed information obtained by correcting the actually measured values.

The analysis value complementing unit according to the fourth aspect of the present invention replaces the wind direction / wind speed information at the position included in the predetermined range with the latest wind direction / wind speed information corrected by the actual measurement value correcting unit.
According to such a configuration, it is possible to obtain accurate analysis value information of the wind direction / wind speed in a predetermined range reflecting the latest wind direction / wind speed information obtained by correcting the actually measured values.

In the wind direction / wind speed correction system according to the fifth aspect of the present invention, the correction amount determined in association with the wind direction / wind speed information includes a plurality of correction amount candidates, and the actual value correction unit measures the actual value. An optimum correction amount is selected from the plurality of correction amounts based on the analysis value information at the position.
According to such a configuration, the measured value of the wind direction and the wind speed can be corrected using a more reliable correction amount selected based on the analysis value information of the wind direction and the wind speed. Calculations can be made.

In the wind direction / wind speed correction system according to the sixth aspect of the present invention, the correction amount determined in association with the wind direction / wind speed information includes a plurality of correction amount candidates, and the actual value correction unit acquires the actual measurement obtained last time. Based on the corrected wind direction / wind speed information obtained by correcting the value, an optimum correction amount is selected from the plurality of correction amounts.
By adopting such a configuration, the measured value of the wind direction and wind speed can be corrected using a more reliable correction amount selected in consideration of the corrected wind direction and wind speed information obtained at a position close to the current position. Therefore, it is possible to calculate the wind direction and speed more accurately.

According to a seventh aspect of the present invention, there is provided an analysis value acquisition unit that acquires analysis value information of wind direction and wind speed at a plurality of points in a predetermined range, and the actual measurement with respect to the actual measurement values of the wind direction and wind speed within the predetermined range. Analysis that complements the analysis value information by using the corrected wind direction / wind speed information obtained by performing the process of correcting the influence of the change in the wind direction / wind speed that occurs in the actual measurement value depending on the environment in which the measurement means that measures the value is installed A wind direction and wind speed presentation system comprising: a value complement unit; and a driving support information generation unit that generates sea state map information based on the analysis value information of the wind direction and wind speed in the predetermined range after being supplemented by the analysis value complement unit.
By adopting such a configuration, it is possible to present detailed analysis value information of the wind direction and wind speed in a predetermined range that is complemented by using accurate wind direction and wind speed information obtained by correcting the actually measured values.

  According to an eighth aspect of the present invention, an actual value of wind direction and wind speed is acquired, and an influence of a change in wind direction and wind speed that occurs in the actual value is corrected by an environment in which a measurement unit that measures the actual value is installed. This is a wind speed correction method.

  According to a ninth aspect of the present invention, measurement value information of wind direction and wind speed at a plurality of points in a predetermined range is acquired, and measurement of the actual measurement value is measured with respect to the actual measurement value of the wind direction and wind speed in the predetermined range. The analysis value information is supplemented using the wind direction / wind speed information after performing the process of correcting the influence of the change in the wind direction / wind speed generated in the actual measurement value depending on the environment where the means is installed, and the predetermined value after the complement This is a wind direction and wind speed presentation method for generating sea state map information based on analysis value information of wind direction and wind speed in a range.

  According to a tenth aspect of the present invention, there is provided a computer of a wind direction / wind speed correction system, wherein a wind direction / wind speed generated in the actual measurement value by means of an environment in which means for acquiring the actual measurement value of the wind direction / wind speed and a measurement unit for measuring the actual measurement value are installed. It is a program for functioning as a means for correcting the influence of the change of.

  According to an eleventh aspect of the present invention, there is provided a computer for a wind direction and wind speed presenting system for obtaining analysis value information of wind direction and wind speed at a plurality of points in a predetermined range, Then, the analysis value information is obtained by using the wind direction / wind speed information after performing the process of correcting the influence of the change in the wind direction / wind speed generated in the actual measurement value in the environment in which the measurement unit that measures the actual measurement value is installed. A program for functioning as means for complementing, means for generating sea state map information based on analysis value information of wind direction and wind speed in the predetermined range after the complementing.

  According to the present invention, it is possible to calculate the wind direction and the wind speed more accurately, and it is possible to more accurately evaluate the resistance force by the wind received by the ship. In addition, it is possible to more accurately present wind direction and wind speed information around the ship being navigated and on the route.

1 is a schematic diagram of a fuel efficiency improvement support system in an embodiment according to the present invention. It is a block diagram which shows an example of the wind direction wind speed correction | amendment system in embodiment which concerns on this invention. It is a figure explaining the wind direction wind speed results database in the embodiment concerning the present invention. It is a figure explaining correction | amendment of the wind direction wind speed analysis value in embodiment which concerns on this invention. It is a flowchart which shows an example of the process in the wind direction wind speed correction system in embodiment which concerns on this invention.

<Embodiment>
Hereinafter, a wind direction and wind speed correction system according to an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a schematic diagram of a fuel efficiency improvement support system according to an embodiment of the present invention.
The fuel efficiency improvement support system 1 supports improvement of fuel efficiency in navigation of the ship 100. The fuel efficiency improvement support system 1 of the present embodiment includes a ship 100, a wind direction and wind speed correction system 10, a meso model analysis system 200, and an operation support system 300. The wind direction and wind speed correction system 10 is communicably connected to the ship 100, the meso model analysis system 200, and the operation support system 300.

  The ship 100 includes an azimuth meter 101, a wind direction anemometer 102, and a speed meter 103. The compass 101 measures the course of the ship 100. The wind direction anemometer 102 measures the wind direction and the wind speed. The speedometer 103 measures the speed of the ship 100. The ship 100 transmits the measured values measured by the direction meter 101, the wind direction anemometer 102, and the speedometer 103 to the wind direction / wind speed correction system 10.

  The meso model analysis system 200 calculates an analysis value (meso numerical prediction model) of a wind direction and a wind speed in a predetermined area including a sea area where the ship 100 navigates using a super computer or the like. The analysis value of the wind direction / velocity is a predicted value based on various weather information. The meso model analysis system 200 divides a predetermined area to be calculated into a grid shape, and calculates an analysis value of wind direction and wind speed for each grid. The meso model analysis system 200 transmits the analysis value information of the wind direction / wind speed to the wind direction / wind speed correction system 10.

  The wind direction / wind speed correction system 10 acquires the actual values of the course / velocity and the wind direction / wind speed of the ship 100 from the ship 100, and acquires the analysis values of the wind direction / wind speed from the meso model analysis system 200. The wind direction / wind speed correction system 10 uses these values to calculate an accurate wind direction / wind speed at the position of the ship 100. The accurate wind direction and wind speed are the wind direction and wind speed after performing correction for removing the influence of air turbulence and the like caused by the wind hitting the ship 100 from the actual measurement values measured by the wind direction anemometer 102. The wind blowing on the sea is affected by structures (including the hull itself) included in the ship 100 when it collides with the ship 100. The measured values of the wind direction and wind speed measured by the wind direction anemometer 102 are not the wind direction and wind speed of the wind actually blown at sea, but the wind direction and wind speed information after the influence. The wind direction and wind speed correction system 10 performs correction to remove this influence from the actually measured values. The wind direction / wind speed correction system 10 transmits the calculated wind direction / wind speed information to the operation support system 300.

  The operation support system 300 includes a fuel efficiency calculation system, a driving support information presentation system that presents course guidance to the operator of the ship 100, and the like. The operation support system 300 performs fuel consumption calculation using accurate wind direction / wind speed information acquired from the wind direction / wind speed correction system 10 and presents driving support information such as course guidance indicating a route for improving the fuel efficiency of the ship 100. Further, the operation support system 300 presents sea state map information indicating the wind direction and wind speed on the route reflecting accurate wind direction and wind speed information.

  In addition, there is no restriction | limiting in particular in the installation place of the wind direction wind speed correction system 10. FIG. For example, it may be installed in a ground data center or may be installed in the ship 100. In the following description, it is assumed that the wind direction and wind speed correction system 10 is installed in a data center on the ground as an example. In addition, it is assumed that the meso model analysis system 200 and the operation support system 300 are also installed in a data center on the ground. The wind direction and wind speed correction system 10 acquires measured values of wind direction and wind speed from a plurality of ships (not shown) other than the ship 100, and based on each measured value, provides accurate wind direction and wind speed information at the position of each ship. You may calculate. In addition, the operation support system 300 may present sea state map information or the like to a plurality of ships other than the ship 100.

FIG. 2 is a block diagram illustrating an example of a wind direction and wind speed correction system according to an embodiment of the present invention.
The wind direction and wind speed correction system 10 includes an actual measurement value acquisition unit 11, an actual measurement value correction unit 12, an analysis value acquisition unit 13, an analysis value complementation unit 14, a communication unit 15, and a storage unit 16.
The actual measurement value acquisition unit 11 acquires actual measurement values of wind direction and wind speed. More specifically, the actual measurement value acquisition unit 11 includes ship course information measured by the direction meter 101 mounted on the ship 100 navigating within a predetermined range, wind direction / wind speed information measured by the wind direction anemometer 102, and speedometer. The speed information of the ship measured by 103 is acquired.

  The actual measurement value correcting unit 12 corrects the influence of changes in wind direction and wind speed that occur in the actual measurement values in the environment in which the measurement unit that measures the actual measurement values is installed. More specifically, the actual measurement value correction unit 12 calculates absolute wind direction / wind speed information from the wind direction / wind speed information measured by the wind direction anemometer 102 using the speed information of the ship 100 and the course information of the ship 100. Further, the actual value correction unit 12 corrects the change in the wind direction and the wind speed caused by the structure of the ship 100 generated in the actual measurement value based on the correction amount determined in association with the wind direction and wind speed information measured by the ship 100. Accurate wind direction and wind speed information.

The analysis value acquisition unit 13 acquires analysis value information of wind directions and wind speeds at a plurality of points in a predetermined range. The analysis values of wind direction and wind speed at a plurality of points in a predetermined range are, for example, a meso numerical forecast model.
The analysis value complementation unit 14 adds the accurate wind direction / wind speed information corrected by the actual measurement value correction unit 12 to the analysis value information of the wind direction / wind speed at a plurality of points acquired by the analysis value acquisition unit 13 for analysis. Complement value information.

The communication unit 15 communicates with the ship 100, the meso model analysis system 200, and the operation support system 300. For example, the communication unit 15 supports at least one of accurate wind direction / wind speed information corrected by the actual measurement value correcting unit 12 and analysis value information of wind direction / wind speed at a plurality of points in a predetermined range after complementation. To system 300.
The storage unit 16 stores data used in various processes in the wind direction and wind speed correction system 10. In addition, the storage unit 16 includes a wind direction / wind speed record database 17 and a wind direction / wind speed analysis value database 18. In the wind direction and wind speed record database 17, a correction amount used by the actual value correction unit 12 for correction processing is recorded. In the wind direction and wind speed analysis value database 18, analysis value information after complementation by the analysis value complementation unit 14 is recorded.

FIG. 3 is a diagram for explaining a wind direction and wind speed record database according to the embodiment of the present invention.
When the wind direction and wind speed measured by the wind direction anemometer 102 mounted on the ship 100 is affected by air turbulence generated when the wind hits the hull (structure) of the ship 100 and does not show an accurate value. There is. For this reason, when the operation support system 300 calculates the resistance value due to wind using the actual measurement values of the wind direction and wind speed, the accurate resistance value cannot be calculated, and the accuracy of the fuel consumption calculation is reduced or displayed in the sea state map information. In some cases, the wind direction and wind speed information was inaccurate. A correction amount for correcting this influence is recorded in the wind direction / wind speed record database 17. By the way, the influence when the wind hits the structure of the ship differs depending on the hull shape of the ship, the position where the anemometer is installed, and the like. Therefore, in the present embodiment, experiments and simulations are performed for each ship by applying winds of various wind speeds from various directions to the hull and examining what value the wind direction anemometer included in the hull measures at that time. Do.

  FIG. 3A shows an example of experimental data performed for obtaining a correction amount for each wind direction and wind speed for the ship 100. In this experiment, for example, wind is applied to the stopped ship 100 from various directions, and the wind direction and the measured values of the wind direction and wind speed measured by the wind direction anemometer 102 are recorded in association with each other. FIG. 3A shows that the wind direction anemometer 102 is “wind direction is north-northeast and north-northeast when the wind direction is north and the wind speed is X1 (m / s)”. Means that X2 (m / s) was measured. Since the effect of the wind direction anemometer on the measured value when the wind hits the hull differs depending on the angle and wind speed at which the wind hits the hull, it is possible to correct for any wind direction and wind speed. Record the actual measured value measured by the anemometer 102 for the combination of wind speeds.

  FIG. 3B shows an example of the wind direction and wind speed correction amount obtained by aggregating the experimental data exemplified in FIG. 3A and analyzing it by a known statistical method. FIG. 3B shows that when the wind direction anemometer 102 measures “a value in the range of north to northeast and the wind speed is in the range of X3 to X4 (m / s)” during the experiment, “the true wind direction is more than the actually measured value. There is a probability of "70%" in the north direction, 10 to 20 degrees, and true wind speed is in the range of +0 to 1.0 (m / s) in addition to the actual measurement value. The probability that the true wind speed is in the range of ± 0.5 (m / s) of the actual measurement value is “20%”, “the true wind direction is 10 to 20 degrees further east of the actual measurement value, The probability that the wind speed is in the range of (measured value−1.0 to measured value) (m / s) is “10%”. The correction amount of the wind direction and wind speed has a range, and the probability is assigned to each correction amount even if the wind of the same wind direction and wind speed is applied to the ship 100 during the experiment, the wind direction anemometer 102 always performs the same measurement. By not showing a value. The correction amount of the wind direction and wind speed exemplified in FIG. 3 is recorded in the wind direction and wind speed record database 17. The actual value correction unit 12 uses the correction amount determined in association with the wind direction / wind speed information recorded in the wind direction / wind speed record database 17 to correct the effect of the structure of the ship 100 from the wind direction / wind speed record. I do.

  FIG. 3B is an example of the wind direction and wind speed correction amount. For example, the degree of influence when the wind hits the hull may differ depending on the direction in which the hull receives the wind. For example, when the wind direction of the ship 100 receives the north wind when the bow of the ship 100 faces east, and when the wind direction of the ship 100 receives the north wind when the bow of the ship 100 faces the north. The turbulence of air may differ depending on the positional relationship between each structure provided in the ship and the installation position of the wind direction anemometer 102, the relationship between the shape of each structure provided in the ship 100 and the wind direction, or the like. Therefore, the above experiment may be performed with the bow directed in various directions, and the correction amount for each wind direction and each wind direction / wind speed may be recorded in the wind direction / wind speed record database 17.

FIG. 4 is a diagram for explaining correction of the wind direction and wind speed analysis value in the embodiment according to the present invention.
FIG. 4 shows an example of sea state map information presented by the operation support system 300. The wind direction and wind speed correction system 10 acquires analysis value information from the meso model analysis system 200, and performs a complementary process using the correct wind direction and wind speed information after correction. The operation support system 300 acquires the complemented analysis value information, generates sea state map information illustrated in FIG. 4, and transmits the sea state map information to the ship 100. The operator of the ship 100 can make use of the sea state map information for driving.

  The arrows shown at each point of the grid included in FIG. 4 are analysis value information acquired from the mesomodel analysis system 200. In this analysis value information, the wind direction is represented by the direction of the arrow, and the wind speed is represented by the color of the arrow or the shade of the color. The meso model analysis system 200 predicts analysis values of wind direction and wind speed in a predetermined range every several hours, for example, and the analysis value acquisition unit 13 acquires the information in the wind direction and wind speed correction system 10. The route guidance for efficiently operating the ship 100 requires accurate wind direction / velocity information in a predetermined range including the route of the ship 100, but the analysis value information provided from the mesomodel analysis system 200 is the lattice information. The eyes are rough and do not have sufficient accuracy. Therefore, the analysis value complementing unit 14 supplements the analysis value information by adding accurate wind direction / wind speed information calculated using the correction amount recorded in the wind direction / wind speed record database 17 to the analysis value information. Thereby, more accurate wind direction / wind speed information at a plurality of points in a predetermined range is generated. At this time, for example, the analysis value complementing unit 14 allows the analysis value information at a certain position A acquired from the meso model analysis system 200 and the accurate wind direction / wind speed information at the position A corrected by the wind direction / wind speed correction system 10 to be within an allowable range. May be replaced with the accurate wind direction / velocity information at the position A corrected from the analysis value information at the position A. At this time, the analysis value complementation unit 14 performs processing for deleting the wind direction / wind speed information supplemented or replaced before a predetermined time or more (for example, 6 hours or more) so as to maintain the freshness of the information. May be.

  A route 41 is a navigation route of the ship 100. The measured value correction unit 12 acquires measured values of the wind direction and wind speed measured by the anemometer 102 at each position on the route of the ship 100. Then, the actual measurement value correcting unit 12 corrects those actual measurement values to calculate accurate wind direction / wind speed information, and the analysis value complementing unit 14 adds the values to the analysis value information. White arrows shown on the path 41 are accurate wind direction / velocity information at the respective positions calculated by the actual measurement value correction unit 12 based on the actual measurement values obtained by the wind direction anemometer 102. The white arrows shown in other areas indicate accurate wind direction / wind speed information obtained by correcting the measured values of wind direction / wind speed measured in other ships that have navigated these areas within a predetermined time (for example, within 6 hours). It is. As described above, the analysis value complementation unit 14 uses the accurate wind direction / wind speed information obtained by correcting the wind direction / wind speed information acquired from a plurality of ships by the correction processing described above, and uses the analysis value information acquired from the mesomodel analysis system 200 more. Refine. The operation support system 300 acquires refined analysis value information and generates sea state map information. In the ship 100 and other ships, the operator can operate by referring to the sea state map information and the detailed wind direction / wind speed information of the sea area to be navigated. For example, when there is a ship navigating a sea area within a predetermined time, accurate wind direction / wind speed information based on actual measurement values measured by a ship navigating the same sea area can be used. When it is assumed that the wind direction and wind speed in the route of the ship 100 do not change so much, the operator operates the ship 100 more safely and more efficiently based on accurate wind direction and wind speed information calculated within a predetermined time. It can be performed. In addition to the wind direction / wind speed information, the sea state map information may display information on the position of other ships in navigation, information representing tidal currents / currents, and the like.

  Further, for example, the wind direction / wind speed indicated by the arrow 42 differs from the accurate wind direction / wind speed information (white arrows 43 to 45) in the vicinity obtained by the correction by the actual measurement value correction unit 12. When the difference between the analysis value information and the corrected accurate wind direction / wind speed information is equal to or greater than a predetermined threshold, the analysis value complementing unit 14 performs processing (update) for replacing the arrow 42 with the corrected accurate wind direction / wind speed information. You may go. For example, in the case of FIG. 4, the wind direction / wind speed correction system 10 performs a process of replacing the arrow 42 with the wind direction / wind speed information indicated by the hollow arrow 44.

  In addition, as a means for further refinement of analysis value information acquired from the mesomodel analysis system 200, a fixed point observation of wind direction and speed may be performed. The fixed point observation device 46 and the fixed point observation device 47 are, for example, a floating body such as a buoy provided with an anemometer and a communication unit that transmits an actual value measured by the anemometer. By providing such a fixed point observation device 46 at a predetermined interval at a position that does not interfere with the operation of the ship, for example, even when a time period when the ship does not operate continues, the operation support system 300 can It is possible to generate elaborate sea state map information.

FIG. 5 is a flowchart showing an example of processing in the wind direction and wind speed correction system according to the embodiment of the present invention.
The flow of processing for correcting the wind direction / wind speed measured by the ship 100 and processing for complementing analysis value information acquired from the meso model analysis system 200 will be described with reference to FIG.
As a premise, the ship 100 is sailing, the direction meter 101 measures the course of the ship 100, the wind direction anemometer 102 measures the wind direction and the wind speed, and the speedometer 103 measures the speed of the ship 100 at predetermined time intervals. It is assumed that the value is transmitted to the wind direction and wind speed correction system 10. In addition, the meso model analysis system 200 calculates in advance the analysis values of the wind direction and the wind speed every several hours at each point obtained by dividing an area including the sea area where the ship 100 operates in a grid pattern, for example, for one day. To do. Further, it is assumed that the correction amount is recorded in the wind direction / wind speed record database 17 of the storage unit 16 in association with the wind direction / wind speed information.

  In the wind direction and wind speed correction system 10, the actual measurement value acquisition unit 11 acquires course information, ship speed information, and wind direction / wind speed information from the ship 100 (step S11). The actual measurement value acquisition unit 11 outputs the acquired actual measurement values to the actual measurement value correction unit 12. Further, the analysis value acquisition unit 13 acquires, for example, analysis value information of wind direction and wind speed for one day of the day from the meso model analysis system 200 (step S12). The analysis value acquisition unit 13 records the acquired analysis value information in the wind direction and wind speed analysis value database 18 of the storage unit 16.

  Next, the actual value correction unit 12 calculates the absolute wind direction and the wind speed (step S13). The measured values of the wind direction and wind speed measured by the ship 100 are relative (apparent) wind directions and wind speeds because the ship 100 is moving. The actual value correction unit 12 corrects the wind direction / wind speed information acquired from the actual value acquisition unit 11 to absolute wind direction / wind speed information. Specifically, the actual measurement value correction unit 12 acquires from the actual measurement value acquisition unit 11, the course information indicating the traveling direction and the traveling speed of the ship 100 based on the course information acquired from the actual measurement value acquisition unit 11, and the ship speed information. The true wind vector (absolute wind direction / wind speed information) is calculated by combining the apparent wind vector indicated by the actual measured values of the wind direction / wind speed.

  Next, the actual value correction unit 12 corrects the absolute wind direction / velocity information (step S14). When wind hits the ship 100, the air flow is disturbed by the structure of the ship 100 and the like. The wind direction anemometer 102 measures the wind direction and speed of the wind affected by the turbulence in the air flow. The influence of the turbulence of the air on the measured values of the wind direction and the wind speed varies depending on the hull shape of the ship 100, the direction in which the wind strikes, the installation position of the wind direction anemometer 102, and the like. In the wind direction / wind speed record database 17, a correction amount for correcting a change in the wind direction / wind speed by the ship 100 is recorded in association with the wind direction / wind speed information. The actual measurement value correcting unit 12 reads out and acquires the correction amount associated with the actual measurement values of the wind direction and wind speed from the wind direction / wind speed record database 17.

Using the example of FIG. 3B, for example, when the absolute wind direction is north-northeast and the absolute wind speed is a value in the range of X3 to X4 (m / s), the actually measured value correction unit 12 includes the correction amount candidates. The correction amount with the highest probability, “wind direction is 10 to 20 degrees north, wind speed 0 to +1.0 (m / s)” is acquired.
Further, for example, even when the absolute wind direction is north-northeast and the absolute wind speed is a value in the range of X3 to X4 (m / s), the accurate wind direction after the actual value correction unit 12 corrects at the previous timing. Is northeast, the measured value correction unit 12 determines that the wind direction does not change abruptly, and the optimum correction amount is “wind direction is 10 to 20 degrees east, wind speed −1.0 to 0.0 ( m / s) "may be selected.
Further, for example, even when the absolute wind direction is north-northeast and the absolute wind speed is a value in the range of X3 to X4 (m / s), it exists within a predetermined range from the position where the actual measurement value of the correction target is measured. If the wind direction / wind speed indicated by the analysis value information at the position indicates the same north-northeast as the absolute wind direction, the actual value correction unit 12 determines the optimum correction amount “wind direction is −10 to +10 degrees based on the analysis value information. Wind speed -0.5 to +0.5 (m / s) "may be selected.
Further, for example, the wind direction / wind speed indicated by the analysis value information at one position facing each other across the position where the actual measurement value of the correction target is measured indicates true north, and the actual measurement value correction unit 12 in the past at the other position. If the accurate wind direction corrected by indicates the east, the measured value correction unit 12 selects a correction amount so that the correct wind direction after correcting the actual measured value is the northeast, which is in between. May be.

  The actual value correction unit 12 corrects the absolute wind direction / wind speed information by adding the read correction amount to the absolute wind direction / wind speed information. The actual measurement value correcting unit 12 outputs the correct wind direction / wind speed information after correction to the analysis value complementing unit 14 and the communication unit 15. The communication unit 15 transmits the corrected wind direction / wind speed information, the position information of the ship 100 that measures the wind direction / wind speed, and the measurement time thereof to the operation support system 300. In the operation support system 300, fuel consumption calculation is performed using accurate corrected wind direction / wind speed information. The correction amount may be recorded in association with the bow direction, the wind direction, and the wind speed for each ship. In that case, the actual measurement value correction unit 12 acquires a correction amount determined in association with the bow direction, the wind direction, and the wind speed for the ship 100 based on the bow direction of the ship 100 and the absolute wind direction / wind speed information. I do.

  Next, the analysis value complementation unit 14 updates the wind direction / wind speed analysis value database 18 using the corrected accurate wind direction / wind speed information calculated by the actual measurement value correction unit 12 (step S15). Specifically, the analysis value complementing unit 14 associates the position information of the ship 100 with the correct wind direction / wind speed information after correction and the measurement time, and adds them to the analysis value information of the wind direction / wind speed analysis value database 18. As described above, the analysis value information acquired from the mesomodel analysis system 200 is a predicted value for each predetermined time. The analysis value complementation unit 14 identifies the analysis value information of the corresponding predicted time zone using the measurement time, and adds and corrects the correct wind direction / wind speed information after correction. At this time, for example, the analysis value information already acquired from the mesomodel analysis system 200 within a predetermined range from the position information of the vessel 100 to be newly added, or the corrected accurate wind direction added by the analysis value complementation unit 14 in the past・ Wind speed information may be recorded. In this case, the analysis value complementation unit 14 may delete these values and update the information with the latest corrected correct wind direction / wind speed information based on the determination that newer information is accurate. In addition, when the measurement time of the correct corrected wind direction / wind speed information that has already been added is in the past for a predetermined time or more, the analysis value complementation unit 14 deletes the wind direction / wind speed information in order to maintain the freshness of the information. May be. The communication unit 15 transmits the analysis value information supplemented / updated by the analysis value complementing unit 14 to the operation support system 300. The operation support system 300 generates the latest sea state map information using the acquired new analysis value information. Further, for example, the operation support system 300 calculates the route of the ship 100 that optimizes the fuel consumption in consideration of the accurate wind direction and wind speed, using the supplemented / updated analysis value information.

  According to the present embodiment, it is possible to correct the wind direction / wind speed information measured by the navigating ship and to calculate accurate wind direction / wind speed information. Therefore, the resistance evaluation by wind can be performed more accurately, and the accuracy of the fuel consumption calculation of the ship is improved. In addition, by adding accurate wind direction and wind speed information obtained by correcting measured values of wind direction and wind speed measured by multiple ships to the meso numerical forecast model provided by the Japan Meteorological Agency, etc., the sea area where the ship navigates It is possible to refine the wind direction and wind speed information at multiple points. By using this information, it is possible to calculate the optimum route of the ship that optimizes the fuel efficiency and to generate accurate sea state map information.

  The wind direction and wind speed correction system 10 may be mounted on the ship 100 or may be provided in a ground data center or the like. Further, the configuration of the wind direction and wind speed correction system 10 excluding the wind direction and wind speed analysis value database 18 is installed in the ship 100, the wind direction and wind speed analysis value database 18 is installed in the data center, and the wind direction and wind speed correction system 10 installed in a plurality of ships. Each may perform a process of complementing the analysis value information of the wind direction and wind speed analysis value database 18 installed in the data center via the network.

  In addition, the wind direction and wind speed presentation system may be configured by the wind direction and wind speed correction system 10 and the sea state map generation function of the operation support system 300. For example, when a passenger ferry sails many times a day in the same sea area, there is a need for the ship operator who wants to refer to information such as wind direction and wind speed measured by the ferry that has already sailed. there were. According to the sea state map information generated by the wind direction and wind speed presentation system, operators of ships navigating in the same sea area can share the sea state information of the day.

  Each process in the wind direction and wind speed correction system 10 described above is stored in a computer-readable recording medium in the form of a program, and the computer of the wind direction and wind speed correction system 10 reads and executes the program. The above processing is performed. Here, the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Alternatively, the computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program.

The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, what is called a difference file (difference program) may be sufficient.
Further, the wind direction and wind speed correction system 10 may be configured by a single computer, or may be configured by a plurality of computers that are communicably connected.

  In addition, it is possible to appropriately replace the components in the above-described embodiments with known components without departing from the spirit of the present invention. The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. The sea state map generation function of the operation support system 300 is an example of a driving support information generation unit.

DESCRIPTION OF SYMBOLS 1 ... Fuel consumption improvement support system 10 ... Wind direction Wind speed correction system 11 ... Actual value acquisition part 12 ... Actual value correction part 13 ... Analytical value acquisition part 14 ... Analytical value complement part 15 ..Communication unit 16 ... storage unit 17 ... wind direction and wind speed result database 18 ... wind direction and wind speed analysis value database 100 ... ship 200 ... meso model analysis system 300 ... operation support system

Claims (11)

An actual value acquisition unit for acquiring actual values of wind direction and wind speed;
An actual value correction unit that corrects an influence of a change in wind direction and wind speed that occurs in the actual measurement value depending on an environment in which the measurement unit that measures the actual measurement value is installed;
Wind direction and wind speed correction system. The actual measurement value acquisition unit acquires actual measurement values of wind direction and wind speed measured by an anemometer mounted on a ship that navigates within a predetermined range,
The actual measurement value correcting unit corrects a change in wind direction / wind speed caused by the structure of the ship, which is generated in the actual measurement value, based on a correction amount determined in association with wind direction / wind speed information measured by the ship. ,
The wind direction and wind speed correction system according to claim 1. An analysis value acquisition unit for acquiring analysis value information of wind direction and wind speed at a plurality of points in a predetermined range;
An analysis for complementing the analysis value information by adding the corrected wind direction / wind speed information obtained by correcting the actual measurement value as the wind direction / wind speed information at the measurement position of the actual measurement value included in the predetermined range. A value complement,
The wind direction and wind speed correction system according to claim 2, further comprising: The analysis value complementing unit replaces the wind direction / wind speed information at the position included in the predetermined range with the latest wind direction / wind speed information corrected by the actual measurement value correcting unit,
The wind direction and wind speed correction system according to claim 3. The correction amount determined in association with the wind direction / velocity information includes a plurality of correction amount candidates, and the actual value correction unit includes the plurality of correction amounts based on the analysis value information at the measurement position of the actual value. Select the optimal correction amount from
The wind direction and wind speed correction system according to claim 3 or 4. The correction amount determined in association with the wind direction / wind speed information includes a plurality of correction amount candidates, and the actual measurement value correction unit corrects the wind direction / wind speed information obtained by correcting the actual measurement value acquired last time. Selecting an optimal correction amount from the plurality of correction amounts based on
The wind direction and wind speed correction system according to any one of claims 2 to 5. An analysis value acquisition unit for acquiring analysis value information of wind direction and wind speed at a plurality of points in a predetermined range;
Correction for performing processing for correcting the influence of changes in wind direction and wind speed that occur in the actual measurement value in the environment in which the measurement unit that measures the actual measurement value is installed with respect to the actual measurement value of the wind direction and wind speed within the predetermined range An analysis value complementing unit that complements the analysis value information using the subsequent wind direction / wind speed information,
A driving assistance information generating unit that generates sea state map information based on the analysis value information of the wind direction and the wind speed in the predetermined range after being supplemented by the analysis value complementing unit;
Wind direction and wind speed presentation system. Acquire measured values of wind direction and speed,
Correcting the influence of changes in wind direction and wind speed that occur in the actual measurement value depending on the environment in which the measurement means that measures the actual measurement value is installed,
Wind direction and wind speed correction method. Obtain analysis value information of wind direction and wind speed at multiple points within a predetermined range,
After performing the process of correcting the influence of the change in the wind direction / wind speed that occurs in the actual measurement value in the environment in which the measurement unit that measures the actual measurement value is installed on the actual measurement value of the wind direction / wind speed within the predetermined range Using the wind direction / velocity information of
Generate sea state map information based on analysis value information of wind direction and wind speed in the predetermined range after the complement,
Wind direction and wind speed presentation method. Wind direction and wind speed correction system computer
Means to obtain the actual measured values of wind direction and speed,
Means for correcting an influence of a change in wind direction and wind speed generated in the actual measurement value by an environment in which the measurement unit that measures the actual measurement value is installed;
Program to function as. The wind direction wind speed presentation system computer,
Means for acquiring analysis value information of wind direction and wind speed at a plurality of points in a predetermined range;
After performing the process of correcting the influence of the change in the wind direction / wind speed that occurs in the actual measurement value in the environment in which the measurement unit that measures the actual measurement value is installed on the actual measurement value of the wind direction / wind speed within the predetermined range Means for complementing the analysis value information using the wind direction / velocity information of
Means for generating sea state map information based on analysis value information of wind direction and wind speed in the predetermined range after the complement;
Program to function as.

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