JP2012018538A - Navigational information displaying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a navigational information displaying apparatus that facilitates maneuvering of a ship to a target point.SOLUTION: A navigational information displaying apparatus has a main picture display unit 9a provided with a display screen 10a and an auxiliary picture display unit 9b having a display screen 10b smaller than the display screen 10a of the main picture display 9a, wherein the main picture display 9a displays on a map a subject ship position picture 29 displaying the current position of the ship provided with the apparatus, the auxiliary picture display unit 9b displays a compass image 50 so rotationally showing an annular bearing scale indicating bearings that a region corresponding to the bow bearing is positioned at the top, and the direction of the target point is represented by a bearing scale of the compass image 50, thereby enabling the auxiliary picture display unit 9b, if positioned to be easily visible by the officer at the helm, to facilitate maneuvering by the officer toward the target point.

Description

  The present invention relates to a navigation information display device that provides information useful for navigation of a ship.

  A conventional general navigation information display device includes an image display provided with a display screen, a ship position detection device that detects the position of the ship, and a bearing detection device that detects the heading of the ship. The own ship position image indicating the position is displayed on the display screen. In addition, the navigation information display device for fishing boats stores position information such as reefs found by a fish finder or the like, and can be displayed on a map of the own ship position image as necessary (for example, patents) Reference 1).

  FIG. 8A is an example of the own ship position image 29 displayed on the display screen 10 of the conventional navigation information display device. In the own ship position image 29, the own ship position and bow direction are displayed as a ship-shaped ship mark 34 on a map 28 in which contour lines 32 and coastlines are described, and the target point is displayed as a square target mark 41. . Here, in a general own ship position image 29, the own ship mark 34 is fixedly displayed on the display screen 10, and when the own ship position or the bow direction changes, the state changes from FIG. 8A to FIG. 8B. As shown in FIG. 4B, the background map 28, the direction mark 36, and the target mark 41 are displayed in a variably displayed manner while the own ship mark 34 is fixed. According to the own ship position image 29, the operator can grasp the relative azimuth of the target point by comparing the own ship mark 34 and the target mark 41 on the map 28.

JP 2009-198424 A (paragraph 0035 FIG. 4)

  In recent years, along with the price reduction of image displays, the image displays of navigation information display devices tend to be enlarged for the purpose of improving the visibility of own ship position images. However, as shown in FIG. 9, many fishing boats A have a narrow maneuvering section B and do not have sufficient space around the operation panel C and the steered wheels D. If a large image display G is installed in such a narrow maneuvering section B, the view of the operator is obstructed and the maneuvering is hindered. Therefore, the image display G should not be in the way of maneuvering. It is often installed at a place where it is difficult to see with the steering wheel D held, such as beside or below B. In such a case, the ship operator cannot frequently check the display information on the image display G, and navigates mainly relying on the ship compass E. Thus, although a large image display can improve the visibility of the ship position image, there is a problem that it is difficult to install the large image display at a position that is easy for the operator to view.

  The present invention has been made in view of the present situation, and an object thereof is to provide a navigation information display device that makes it easier to maneuver to a target point than in the conventional configuration.

  The present invention provides a main image display provided with a display screen, a sub-image display that is smaller than the main image display and can be installed away from the main image display, and detects the position of the ship. The ship position detection device that outputs the ship position information, the map information storage means that stores the map information, the direction detection apparatus that detects the heading direction and outputs the heading direction information, and the position information of the target point Based on the position information storage means for storing, the ship position information output by the ship position detection device, and the map information stored in the map information storage means, the current position of the ship is displayed on the map. A first display control means for controlling to display the own ship position image on the main image display, and an annular bearing scale indicating the bearing based on the heading information output by the bearing detection device The part corresponding to the heading is And a second display control means for controlling the sub-image display to display a compass image that is rotated so as to be positioned at the position of the ship. A navigation information display device characterized in that the direction of the target point is indicated by the direction scale of the compass image based on the ship position information to be output and the position information of the target point stored in the position information storage means. is there.

  Since the compass image according to the present invention indicates the bow direction by a rotating annular bearing scale, the ship operator can know the bow direction from the compass image like the existing ship compass. Further, according to such a compass image, the ship operator can know the heading direction as well as the heading direction from the direction scale. Here, since the bearing scale is rotated and displayed so that the heading is at the top, the operator can compare the bow indicated by the bearing scale with the bearing of the target point to compare the target with respect to the heading. The relative azimuth of the point can be grasped instantaneously, and navigation to the water area around the target point is easy.

  In the present invention, since the sub-image display for displaying such a compass image is smaller than the main image display, it is installed in a small space near the steered wheels and the operation panel even in a narrow ship maneuvering section. The operator can frequently check the compass image displayed on the sub-image display while holding the steering wheel. Since the compass image is simpler than the own ship position image, the bow direction and the direction of the target point can be clearly shown even on a small display screen. As described above, according to the present invention, the operator can obtain much of the information necessary for maneuvering to the target point from the compass image of the sub-image display, so that the main image display that displays the ship position image is displayed. Even if the vessel is installed in a place that is relatively difficult to see, the ship operator can easily navigate to the target point.

  In the present invention, as a specific configuration indicating the azimuth of the target point with an azimuth scale, the second display control means is in the compass image, and corresponds to the azimuth of the target point on the azimuth scale. It is proposed to control to display a predetermined target orientation index so as to indicate a part. In addition, the second display control unit is also proposed to perform control so that the part corresponding to the direction of the target point on the compass image is displayed in a manner distinguishable from other parts in the compass image. Is done. According to these configurations, the boat operator can check the relative azimuth of the target point in a short time, and therefore, the burden on the boat operator when maneuvering can be reduced.

  As described above, according to the present invention, the boat operator can know the relative heading and the target heading from the compass image of the sub-image display. This sub-image display is smaller than the main image display for displaying the ship position image, and the compass image is simple and can be displayed sufficiently clearly even with a small sub-image display. Even if it is a narrow ship, by installing such a sub-image display at a position where it can be easily seen, the ship operator can frequently check the direction of the target point while operating the ship. As described above, in the present invention, the compass image displayed on the sub-image display can compensate for the shortcomings of the large main image display. The ship can be easily maneuvered.

  In addition, since the compass image according to the present invention shows a heading like a general marine compass, a sub-image display can be used instead of the marine compass. In particular, a marine compass needs to be installed in front of the operator, but the heading and target point indicated by the compass image do not depend on the viewing angle of the operator. There is an advantage that it can be decided freely.

It is explanatory drawing which shows the navigation information display apparatus 1 of an Example. It is explanatory drawing which shows the example of installation of the subimage display 9b. 3 is a block diagram showing a control circuit of a navigation information display device 1. FIG. It is a display example of the display screen 10a of the main image display 9a. 6 is a display example of a compass image 50. It is explanatory drawing which shows the compass images 50a and 50b of a modification. It is explanatory drawing which shows the compass images 50c and 50d of a modification. It is a display example of the own ship position image 29 which concerns on the conventional navigation information display apparatus. It is explanatory drawing which shows the maneuvering part B of the fishing boat A.

  Embodiments of the present invention are described according to the following examples.

  FIG. 1 is an explanatory diagram illustrating a configuration of a navigation information display device 1 according to the embodiment. The navigation information display device 1 of this embodiment includes a main image display 9a having a thick rectangular plate shape with a large display screen 10a provided on the front. The main image display 9 a has a main control unit that controls the navigation information display device 1 in an integrated manner in the housing, and constitutes a main body of the navigation information display device 1. The main image display 9a is connected with a rectangular plate-shaped sub-image display 9b having a small display screen 10b on the front surface via a cable 8b. In addition to the sub-image display 9b, a key operation unit 26 for operating the navigation information display device 1 is connected to the main image display 9a via the cable 8a. However, an azimuth detection device, a ship position detection device, a fish finder transmission / reception device, and the like are also connected via a cable.

  In this embodiment, the main image display 9a is composed of a liquid crystal display having a size of about 17 inches, and the sub-image display 9b is composed of a small liquid crystal display of about 3 to 4 inches. Here, since the main image display 9a and the sub-image display 9b are connected via the cable 8b, the small sub-image display 9b can be installed separately from the main image display 9a. It can also be installed in a narrow space where the display 9a cannot be installed. In addition, the code | symbols 7a and 7b in FIG. 1 are the stands for installing the main image display 9a and the sub image display 9b separately.

  FIG. 2 shows an installation example in which the sub-image display 9b is installed in the maneuvering section B of the fishing boat A. In such an installation example, the sub-image display 9b is installed on the upper part of the operation panel C of the boat maneuvering section B, and the operator can easily see the sub-image display 9b while holding the steering wheel D. In the narrow maneuvering section B as shown in FIG. 2, if the large main image display 9a is installed, it will interfere with the maneuvering, but the sub image display 9b is much smaller than the main image display 9a. Therefore, even if it is disposed in the narrow maneuvering section B, it does not interfere with the maneuvering.

  FIG. 3 is a block diagram illustrating a control circuit of the navigation information display device 1 according to the embodiment. The main control unit 11 is composed of a microcomputer and includes a central processing unit (CPU) 12 for processing and executing overall control of the navigation information display device 1. A measurement information memory (RAM) 13 for reading and writing measurement information and the like is connected to the central processing unit 12 via a data bus (not shown) for exchanging data. The central processing unit 12 is connected to a map information memory (ROM) 14 in which map information is stored via an address bus (not shown) for unilaterally transmitting information for designating an address for reading and writing data. Connected. Further, the central processing unit 12 is connected with a program memory (ROM) 15 in which programs for executing various controls are stored, and a calculation memory (RAM) 16 in which data necessary for calculations are stored. Has been. In addition, the main control unit 11 is provided with a timing device 17, and time information is output from the timing device 17 to the central processing unit 12 as needed.

  Further, the main control unit 11 is provided with an input port (not shown) and an output port (not shown), and the azimuth detecting device 2 and the own ship position detecting device 3 are connected through these ports. Further, the navigation information display device 1 of this embodiment also serves as a fish finder, and a fish finder transmitting / receiving device 4 is connected to the main controller 11.

  The azimuth detecting device 2 is configured such that a magnet rotates by, for example, geomagnetism, and an azimuth detecting device of a type that detects the rotation angle of the magnet as a magnetic flux change by a Hall element, a directional sensor such as a fluxgate sensor, a gyro sensor, or the like. A detection device may be applied. This azimuth detecting device 2 is attached to an appropriate part of the ship so that the N pole detection direction and the bow direction are parallel to each other.

  The azimuth detecting device 2 generates a sin output or a cos output that changes in accordance with the current heading. This output is output to the main control unit 11 as the heading information via the A / D converter 25 and decoded by the central processing unit 12.

  The own ship position detection device 3 includes a GPS antenna 23 and a GPS arithmetic circuit 24 that connects the GPS antenna 23 and the main control unit 11, and based on a signal received by the GPS antenna 23, longitude and The two-dimensional absolute position of the ship specified by the latitude is detected, and the detected two-dimensional absolute position is output to the input port of the main control unit 11 as own ship position information.

  The fish finder transmission / reception device 4 includes a transmission / reception unit 20 that transmits / receives ultrasonic waves, and a transmission / reception control circuit 21 that connects the transmission / reception unit 20 and the main control unit 11. When a predetermined trigger signal is output to the transmission / reception control circuit 21, the transmission / reception unit 20 transmits an ultrasonic pulse of a predetermined wavelength into water. Then, when an echo wave reflected on the bottom of the water or a school of fish is received by the transmitter / receiver unit 20, the transmit / receive control circuit 21 receives information on the echo wave received by the transmitter / receiver unit 20 (received timing, received intensity, etc.). ) To a digital signal and output to the main control unit 11 as echo wave information.

  When the echo wave information is input from the transmission / reception wave control circuit 21 to the main control unit 11, the central processing unit 12 receives the echo wave information from the own ship position information output from the GPS arithmetic circuit 24 and the time measuring device 17. In association with the output time information, it is stored in the measurement information memory 13 as a set of measurement information. The measurement information memory 13 has a capacity capable of storing measurement information for about 5 hours, and the measurement information is accumulated and stored in the order of measurement. When the measurement information exceeds the storage capacity, old measurement information is sequentially deleted.

  The map information memory 14 constitutes map information storage means according to the present invention, in which two-dimensional map information with a coastline and contour lines of a required area or three-dimensional map information is stored as vector data. The

  Further, a key operation unit 26 for an operator to input various settings is connected to the input port of the main control unit 11. The key operation unit 26 includes a pointing device and a plurality of buttons. The operator can change the display mode, various display settings, and the like of the image display devices 9a and 9b by operating these.

  In the present embodiment, the position information (two-dimensional absolute coordinates) of the point is measured by designating the point on the map displayed on the main image display 9a via the key operation unit 26. The information can be stored in the information memory 13. For this reason, the operator can memorize | store the positional information on the said point, when a suitable reef etc. are discovered from the echo wave information of the transmission / reception apparatus 4 for fish finder. And in a present Example, the point which memorize | stored the positional information in this way can be displayed on a map by setting to a target point. That is, in this embodiment, the measurement information memory 13 constitutes the position information storage means according to the present invention.

  A display control circuit 18 is connected to the input / output port of the main control unit 11, and the main image display 9 a and the sub image display 9 b are connected to the display control circuit 18. This display control circuit 18 is accommodated in the housing of the main image display 9a.

  According to the above configuration, the central processing unit 12 reads each information stored in the measurement information memory 13 or the map information in the map information memory 14 as needed, and is selected by operating the key operation unit 26. Various required image data are generated based on the display mode and display settings, and display screen information is generated from each of the generated image data and output to the display control circuit 18. The central processing unit 12 outputs to the display control circuit 18 display screen information for the main image display 9a and display screen information for the sub-image display 9b. When receiving the display screen information, the display control circuit 18 converts the display screen information into an appropriate video signal and outputs it to the corresponding image display devices 9a and 9b. That is, the central processing unit 12 and the display control circuit 18 constitute a first display control unit and a second display control unit according to the present invention.

  FIG. 4 is a display example of the display screen 10a of the main image display 9a. As shown in FIG. 4, on the main image display 9a, the own ship position image 29 showing the own ship position and the like on the map 28, and the echo wave image formed by visualizing the echo wave information and displaying it in time series. 30 etc. are displayed. In the navigation information display apparatus 1 according to the present embodiment, these images 29 and 30 can be displayed in parallel or in an overlapping manner as shown in FIG. Arbitrary images 29 and 30 can also be displayed on the entire display screen 10a.

  As shown in FIG. 4, the own ship position image 29 shows the current position of the own ship, the current bow direction, and the wake on the own ship position surrounding map 28 to which the contour line 32 and the coastline 33 are attached. It is shown. More specifically, the current position of the ship is indicated by the position of the ship's own ship mark 34 attached to the map 28, and the bow direction is indicated by the direction of the pointed tip of the ship's mark 34. The wake is indicated by a wake line 35 on the map 28. In addition, an orientation mark 36 indicating the N-pole direction of the map 28 is attached to the upper left part of the ship position image 29. In the own ship position image 29, the own ship position and the bow direction are fixedly displayed. That is, when the own ship position or the bow direction changes, the own ship position image 29 is updated so that the background map 28 moves and rotates without changing the position and orientation of the own ship mark 34.

  As shown in FIG. 4, the echo wave image 30 is formed by arranging visualized echo wave information in the order of measurement along the width direction. In the echo wave image 30, newer echo wave information is displayed on the right side, and older echo wave information is on the left side. The vertical axis indicates the water depth reflected by the transmitted ultrasonic wave, and the intensity of the received echo wave is represented by color and shade. In the echo wave image 30, echo waves continuously displayed in the width direction are water bottom echoes 38 reflected from the bottom of the water, and echo waves displayed in a lump above the water bottom echo 38 are fish echoes reflected from the fish school. 37.

  FIG. 5 is a display example of the display screen 10b of the sub-image display 9b. As shown in FIG. 5, the sub-image display 9b displays a compass image 50 indicating the heading on the entire display screen 10b. In this compass image 50, an annular azimuth scale 52 is rotated and displayed with a predetermined reference point 51 as the center. This azimuth scale 52 is marked with alphabets indicating east, west, north and south, and numbers indicating azimuth angles. Further, a ship-shaped mark 53 is displayed at the reference point 51 with the tip (head portion) facing upward, and a linear guideline 54 is displayed upward from the tip of the ship-shaped mark 53. The ship mark 53 and the guideline 54 are fixedly displayed on the compass image 50 and indicate the uppermost part of the rotating orientation scale 52 at the tip of the guideline 54.

  In the compass image 50, the bearing scale 52 is rotated and displayed so that the scale corresponding to the current bow direction is the top of the bearing scale 52 so that the tip of the guideline 54 indicates the current bow direction. The Specifically, when the current heading (azimuth angle) is 35 °, as shown in FIG. 5A, the azimuth scale 52 is set so that the “35 °” scale is at the top. The rotation is displayed, and the tip of the guide line 54 indicates “35 °” of the azimuth scale 52. Further, when the ship turns from such a state and the heading becomes 80 °, as shown in FIG. 5B, the heading mark 53 and the guideline 54 are fixedly displayed and the bearing scale 52 is displayed. The display is rotated so that the scale of “80 °” is at the top, and the tip of the guideline 54 indicates “80 °” of the orientation scale 52. That is, according to the compass image 50, the ship operator can know the heading of the ship in the same manner as when viewing an existing ship compass.

  In the compass image 50, the current direction of the target point is indicated by the direction scale 52. Specifically, a triangular target direction index 55 is displayed on the direction scale 52 so as to indicate a part corresponding to the direction of the currently set target point. For example, when the current azimuth (absolute azimuth) of the target point with respect to the ship is 80 °, as shown in FIG. 5A, the target azimuth is directed to indicate the “80 °” scale of the azimuth scale 52. An indicator 55 is displayed. Then, when the ship navigates from this state and the current direction of the target point reaches 60 °, the target direction index so as to indicate the scale of “60 °” of the direction scale 52 as shown in FIG. 55 is displayed. As described above, according to the compass image 50, the ship operator can know the current direction of the target point by the direction scale 52. In particular, in such a compass image 50, since the heading is displayed so as to be at the top of the heading scale 52, as shown in FIG. The relative azimuth of the target point with respect to the heading can be grasped at a glance and reflected in the maneuvering. For example, in the compass image 50 shown in FIG. 5A, the target orientation index 55 is displayed at a part inclined 45 ° to the right from the top. By looking at the compass image 50, the operator can grasp at a glance that there is a 45 ° misalignment between the heading and the direction of the target point, and the operator can turn his ship 45 ° to the right. It can be seen that it is possible to navigate with the bow toward the target point.

  Below, the creation process of the image data of the compass image 50 in the main control part 11 of the navigation information display apparatus 1 is demonstrated. First, the central processing unit 12 reads the latest ship position information and heading information stored in the measurement information memory, and the position information of the target point, and from the difference between the absolute coordinates of the ship position and the target point. Calculate the absolute direction and distance of the target point. Subsequently, the relative orientation of the target point with respect to the bow direction is calculated based on the vector data and the latest bow orientation information.

  Then, the central processing unit 12 creates image data indicating the bearing scale 52 rotated by the heading direction, the target bearing index 55 rotated by the relative bearing of the target point, the boat mark 53 and the guideline 54. . Note that the target orientation index 55 is not displayed on the compass image 50 when the target point is not set. While the compass image 50 is being displayed, the central processing unit 12 repeats the image data creation process at a high frequency so that the heading and the target point shown in the compass image 50 are based on the latest information. Are output to the display control circuit, and the compass image 50 is frequently updated. The image data of the compass image 50 can be easily created, and the direction information can be easily calculated from the latest ship position information and bow direction information. For this reason, the compass image 50 is much simpler in the calculation process for creating image data than the own ship position image 29 that requires the calculation process to move and rotate the map each time the image is updated. The display delay from the detection of own ship position and azimuth information to image update is extremely small, and the azimuth of the bow and target point can be shown to the operator in substantially real time.

  As described above, according to the compass image 50 according to the present embodiment, the boat operator can know the heading in substantially real time in the same manner as the existing ship compass. Further, according to the compass image 50, the boat operator can instantly grasp the relative azimuth to the target point. In particular, the sub-image display 9b according to the present embodiment is smaller than the main image display 9a, and as shown in FIG. 2, the side of the operation panel C of the maneuvering section B is similar to the existing ship compass. Can be installed without problems. For this reason, the ship operator can navigate to the water area around the target point while observing the compass image 50 of the sub-image display 9b instead of the ship compass while grasping the steering wheel D. The marine compass needs to be installed in front of the operator in order to accurately indicate the bow direction. However, in the compass image 50, such a restriction does not exist and the sub-image display 9b is relatively free. There is an advantage that it can be installed in.

  The navigation information display device according to the present invention is not limited to the embodiment described above, and various modifications can be made without departing from the spirit of the present invention.

  For example, FIG. 6A is a modification of the compass image according to the above embodiment. In the compass image 50a, instead of displaying the target azimuth index on the azimuth scale 52, the scale corresponding to the azimuth of the target point on the azimuth scale 52 (F portion in FIG. 6A) flashes. As described above, the direction of the target point may be indicated by blinking the corresponding part of the orientation scale 52, changing the display color, or displaying it brightly so that it can be distinguished from other parts.

  FIG. 6B shows another modification of the compass image according to the above embodiment. In the compass image 50b, the azimuth scale 52a is displayed in a horizontally long circular shape to form a bird's eye view. As described above, the azimuth scale according to the present invention may employ a shape other than a perfect circular ring shape.

  FIG. 7A shows another modification of the compass image according to the above embodiment. The compass image 50c indicates the direction of the tidal current by an arrow-shaped tidal index 56 extending from the reference point 51 in addition to the heading and the target position, and further indicates a tidal current velocity notation 57 in the vicinity of the tidal index 56. It is. In this way, if the tidal current information is displayed on the compass image 50c, the ship operator can steer more accurately to the target point in consideration of the influence of the tidal current. Thus, the compass image according to the present invention can display the direction of the tidal current and the flow velocity, and can also display the wind direction, the wind speed, and the like in the same manner. The flow velocity and wind speed are not limited to numerical notation, and may be displayed in vectors.

  FIG. 7B shows another modification of the compass image according to the above embodiment. Such a compass image 50d shows a distance notation 58 to the target point on the target orientation index 55. Thus, the distance to the target point can be displayed on the compass image according to the present invention. Similarly, the current traveling speed can be indicated at the tip of the guide line 54 or the like.

  Further, the compass image according to the present invention need not always be displayed on the sub-image display, and when the compass image is unnecessary, another type of image is displayed on the sub-image display instead of the compass image, The compass image may be reduced and displayed.

  Further, the navigation information display device 1 of the above embodiment also serves as a fish finder, but the navigation information display device of the present invention is not limited to the one that also serves as a fish finder, and resonates with the main image display 9a. There is no need to display wave images. Further, in the navigation information display device of the present invention, a third image display may be provided in addition to the main image display 9a and the sub-image display 9b.

DESCRIPTION OF SYMBOLS 1 Navigation information display apparatus 2 Direction detection apparatus 3 Own ship position detection apparatus 9a Main image display device 9b Sub-image display apparatus 10a, 10b Display screen 11 Main control part 26 Key operation part 29 Own ship position image 50 Compass image 51 Reference point 52 Azimuth scale 53 Hull form mark 54 Guidelines 55 Target orientation index

Claims (3)

A main image display with a display screen;
A sub-image display that has a smaller display screen than the main image display and can be placed away from the main image display;
Own ship position detection device that detects the position of the ship and outputs it as ship position information;
Map information storage means for storing map information;
A heading detection device that detects heading and outputs it as heading information;
Position information storage means for storing position information of the target point;
Based on own ship position information output from the own ship position detection device and map information stored in the map information storage means, an own ship position image obtained by displaying the current position of the own ship on a map is obtained. First display control means for controlling to display on the main image display;
Based on the heading information output by the heading detection device, a compass image formed by rotating and displaying an annular heading scale indicating the heading so that the portion corresponding to the heading is located at the top is the sub-image. Second display control means for controlling to display on the display,
The second display control means, based on own ship position information output from the own ship position detection device and position information of the target point stored in the position information storage means, A navigation information display device characterized by an azimuth scale of an image.   The second display control means controls to display a predetermined target orientation index so as to indicate a part of the compass image corresponding to the orientation of the target point in the compass image. The navigation information display device according to claim 1.   The second display control means controls the display of the compass image so that the part corresponding to the direction of the target point on the direction scale is displayed in a manner distinguishable from other parts. The navigation information display device according to claim 1.

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