JPH0134085Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field) This invention relates to a technology for comprehensively displaying steering information necessary for steering a ship.

(Prior art and its disadvantages) Conventionally, for this type of display purpose, information such as ship speed, rudder angle, wind direction, wind speed, tidal current, heading, turning rate, hull inclination, etc. Each had a separate meter pointer displayed on the wall inside the wheelhouse. However, there is no correlation between these meters, and they are simply arranged in an arbitrary order, so the driver correlates the values of each meter with each other in his mind and steers while considering the mutual influence. decisions were being made. Furthermore, since most conventional devices have indicators with electrical and mechanical structures, maintenance work such as lubricating the rotating parts and preventing dust from entering is required, resulting in short lifespans and noise due to mechanical wear. There was a problem. Another drawback is that it requires space and space in proportion to the number of desired information.

(Purpose of the invention) The purpose of this invention is to facilitate intuitive ship maneuvering decisions by displaying data necessary for ship maneuvering on a common screen.

(Structure of the invention) First, the gist of the invention will be explained using examples of the main claims.

In FIG. 2, 1 indicates the screen of a cathode ray tube display.

A ship shape reference mark S _p is displayed in the center of the screen. (This may be a pasted mark or the like) A rudder angle mark L is displayed from the center of the hull toward the rear. This mark rotates within the range of the steering angle scale θL along the trajectory of the tip. A pair of azimuth scales D and G are displayed around the ship shape mark S _p . The outer azimuth scale D is a fixed azimuth scale (hereinafter referred to as fixed scale) with the bow direction set at 0 degrees, and the inner scale G is a gyro azimuth scale (hereinafter referred to as movable scale) that rotates in conjunction with the gyro compass. be. On the outside of the scale, a wind direction mark W and a current direction mark T are displayed facing the ship shape mark S _p .

When steering the vehicle while observing the screen in this manner, the following display operations are performed, for example.

Assuming that the bow is currently pointing in the absolute north direction (gyro direction) and changes course to 30 degrees, the reference mark will be marked using the direction setting device (described later).
Point the bow of the movable ship mark SM, which is displayed separately from S _p , to 30 degrees as shown by the dotted line. As a result, the rudder angle mark L gradually rotates to starboard and stops at 30 degrees (provided that the rudder angle ratio of this ship is 1/1). By turning the rudder angle, the bow of the ship changes from absolute 0 degrees to 2 degrees, 5 degrees, and 10 degrees. According to this change, the bow of the movable ship shape mark SM begins to return toward the fixed scale of 0 degrees. The steering angle is proportional to this movement.
30, 28, 25, and when the bow of the actual ship points to an absolute heading of 30 degrees (when the ship shape mark returns to the fixed heading of 0 degrees), the rudder angle mark L returns to 0 degrees, and the movable scale is 030 degrees. is held at the fixed scale 0 degree position.

The wind direction mark W and the current direction mark T are arranged in the center of the screen, that is, so that you can see directly from which direction they will affect the ship.At the bottom of the screen, you can see the ship speed, turning speed, azimuth, wind speed, current speed, and the ship's hull. The slope is displayed numerically.

Next, an example for realizing such an image will be described.

In FIG. 3, 2 is a general-purpose ship speed and current meter that uses ultrasonic waves. 3 is an anemometer for measuring wind speed and direction; 4 is a gyro compass; 5 is an inclinometer for measuring the inclination angle of the ship; and 6 is a rudder angle meter for generating a rudder angle signal. The electrical output of each meter is stored in a data RAM 9 from a central processing unit 8 (hereinafter referred to as CPU) via an interface 7.

10 is a display RAM having a number of memory elements corresponding to the display pixels of the cathode ray tube display 11, and as shown in the lower part of FIG.
It is used to display measurement results such as turning speed, gyroscope direction, wind speed, current speed, hull inclination, etc. in numbers.

Reference numeral 12 is a display ROM in which a reference ship shape S _p , a fixed scale D, and a rudder angle scale θL are fixedly stored. 13 consists of four display ROMs, each of which stores a tidal current mark T, a wind direction mark W, a rudder angle mark L, and a movable scale G in a fixed manner. As will be described later, the orientation of these four marks can be changed on the cathode ray tube surface according to measurement data. Reference numeral 14 is also a display ROM in which a movable ship shape mark SM is stored. As shown in FIG. 4, this ship-shaped mark is divided into a plurality of oblique perspective views. Then, one type of ROM from these plurality of ROMs is selected and displayed in accordance with the measurement results of the inclinometer 5.
The contents of RAM and ROM for display are set in a latch circuit 1 so that they can be observed simultaneously on the cathode ray tube surface.
5 is output.

A clock pulse generator 16 drives the latch circuit 15 and the X, Y counter 17.
The X,Y counter 17 drives the X,Y deflection coil 18. The output of the latch circuit 15 is sent to the D-A converter 1.
9 to an X, Y scanning cathode ray tube display 11. X, Y counter output is coordinate conversion ROM
20, and is converted into distance r and angle θ coordinate signals, and outputs tidal current marks, wind direction marks, rudder angle marks,
Each ROM13 of movable scale and ROM1 of movable ship shape
4 address register (not shown).

Actually, the output of the rudder angle gauge 6 may be obtained from the rudder angle output of the autopilot device 20 of the own ship. The azimuth output of the azimuth setter 21 of the autopilot system 20 is supplied to a latch circuit 22 and an adder 23. The latch circuit 22 holds the input when setting the heading, that is, the absolute heading of the gyro compass at the bow.
24 is an adder that subtracts the gyroscope direction from the output of the adder 23, and this output is added to the angle θ output of the coordinate conversion ROM 20.

Display ROM13 and 14 are provided via CPU8.
Each direction data is supplied from RAM9.

25 is a ROM in which programs are stored.

(Operation of the invention) The operation of taking in data into the data RAM 9 has been described above, so a description thereof will be omitted.

(Digital display of data) The CPU 8 reads the ship speed, current speed, current direction,
Read out the wind speed, wind direction, gyroscope direction, inclination angle, and rudder angle, and at the same time read "ship speed KTS" from ROM25,
A symbol such as "WIND/SKTS" is read out and written to a predetermined address in the display data memory 10. The contents of this display data memory are stored in an X, Y counter 17 driven by a clock pulse generator CP.
The output is displayed in the manner shown in FIG. 1 at the bottom of the cathode ray tube display 11 where X and Y scanning is performed.

(Display of fixed scale, etc.) The reference ship shape, fixed scale, and rudder angle scale recorded in the ROM 12 are read out as they are and supplied to the cathode ray tube display 11, as shown as S _p , D, and L in FIG. Fixed display.

(Display of current, wind direction, rudder angle marks) When these marks are read directly from the ROM 13 and displayed on the cathode ray tube display 11,
It is assumed that the fixed scale is located in the 0 degree direction (in the case of rudder angle, in the stern direction).

When performing normal steering work, current direction and wind direction are concerned with the relative orientation to the ship's own ship, so these marks will now be displayed in relative orientation.

The raw data measured by the flow direction and wind vanes 2 and 3 is usually relative azimuth data, and the absolute azimuth is obtained by adding or subtracting the gyroscope azimuth. Therefore,
These angle data signals read from the RAM 9 are directly added to the angle output θ of the coordinate conversion ROM 20 to determine the address of each ROM 13.
The rudder angle value read from RAM9 is also a relative angle signal with respect to the bow and stern line, so the coordinates are converted in the same way.
Added to ROM20 output. If the movable scale G displayed in Figure 2 is displayed as is, the heading direction will be 0.
It is stored in the ROM 13 so that the Since this scale is linked to the output direction of the gyro compass 4, the gyro direction output read from the RAM 9 is added to the angle output θ of the coordinate conversion ROM 20.

If it is desired to display the above-mentioned flow direction and wind direction mark in absolute direction, a value twice the gyroscope direction may be added to the output of the data RAM 9 to be used as an address designation signal.

(Direction setting effect) The address of the movable ship-shaped ROM 14 is determined as follows.

Now, as shown by S _p in Fig. 2, the operation will be explained for the case where the ship changes its course to 30 degrees while it is proceeding northward.

First, the azimuth setting device 21 of the autopilot device generates a command signal for changing the course in the direction of 30 degrees. For ease of explanation, assume that the angle value is directly converted into a signal value. At this time, the latch circuit 22 is driven by the azimuth setting signal and holds the gyro azimuth 0 at that time. Therefore, the values "0" and "30" are added to the input of the adder 23, and an output of "30" is outputted to the adder 24. The output value "30" of the adder 23 and the azimuth azimuth output value "0" are input to the adder 24. As a result, the output value "30" is the angle output value of the coordinate conversion ROM 20 (the angle on the cathode ray tube display). ), and this specifies the address of the movable ship-shaped ROM 14 as an address value. In this example, "30" is specified, so this
When the data in the ROM 14 is displayed, the ship shape mark SM is displayed, for example, as a dotted line in the direction shown by the dotted line in FIG. At this time, the ship shape mark SM is prepared in advance with several types of inclination angles, but which ROM
The selection is made based on the tilt angle signal read out from the RAM 9 by the CPU.

On the other hand, when the ship's heading is set to 30 degrees, the autopilot device 20 has a rudder angle of 30 degrees to starboard.
A control command signal is issued to the This is when the rudder angle ratio of the ship is determined to be 1:1, and differs depending on the ship.

Now, let's consider a case where the actual ship begins to turn and the bow reaches a direction of 10 degrees. In this case, the output "30" of the adder 23 and the wheel direction "10" are input to the adder 24, but since the wheel direction is subtracted, the output of the adder 24 is "20". . Since this is input to the address register of the movable boat shape ROM 14, the boat shape mark SM is displayed in a state indicating the 20 degree direction of the fixed scale D in FIG. 2. At this time, the address position of the movable scale ROM 13 is determined by the value "10" obtained by adding the gyro direction "10" from the CPU to the angle output θ of the coordinate conversion ROM 20, so the movable scale corresponding to the fixed scale 000 is
Therefore, it appears to the observer that the movable ship mark SM and the movable scale G are rotating as one in the counterclockwise direction. When the actual hull completes turning to the absolute azimuth of 30 degrees, the movable scale "030" and the movable hull shape mark SM
has returned to the bow position and the rudder angle mark L is also 0.
Return to degree.

In the above example, the azimuth scale was scaled numerically, but
It may be displayed using symbols such as "N", "NE", "E", and "SE". Further, although the wind direction and flow direction marks are both shown on the outer frame, they may be shown on the inside of the movable scale.

Furthermore, in the embodiment shown in FIG. 3, the azimuth direction is held by the latch circuit 22 after the azimuth setting, but the functions of the latch circuit 22 and the adders 23 and 24 may be performed within the CPU 8. Needless to say.

In FIG. 3, the display of tidal current, wind direction, rudder angle marks, movable scale, and movable ship shape is achieved by a combination of fixed memory 13 and coordinate conversion ROM 20.
The same effect can be obtained with RAM. Next, this will be explained with reference to FIG. The difference from Figure 3 is the current mark ROM and wind direction mark.
Each dedicated image memory (RAM) 26 in ROM13
, and the coordinate conversion ROM 20 shown in FIG. 3 has been removed.

In FIG. 5, the CPU 27 periodically reads the current, wind direction, rudder angle, gyro direction, etc. from the input device 28, and compares it with the previous data stored in the RAM 9. If the data values are different, the contents of the image RAM 26 belonging to each data are erased. Thereafter, the corresponding mark data is read from the fixed data ROM 13 and rewritten at the new address position of the image RAM 26. Movable ship mark
To rewrite the SM, the CPU 27 reads the gyro direction when setting the direction of the autopilot device 20 and stores it in the RAM 9. Subsequently, as described above, the set orientation and the stored gyro orientation are added and the result is stored in the RAM 9. Next, this addition output is read out, the gyroscope azimuth value that changes every moment is subtracted, and this result is converted into X, Y address values and supplied to the write address register of the image RAM 26. On the other hand, the CPU 27 reads data from the inclinometer and, in accordance with the data, sets multiple pieces of movable ship shape ROM.
Select the one with the appropriate slope from among the 14 images above.
Data is supplied to the RAM 26 and rewriting of the image RAM is completed.

Reading from the image RAM 26 is performed by outputting from the X, Y counter 17 to the X, Y address register of the RAM 26.

As explained above, according to the present invention, the steering information that was conventionally displayed separately is displayed together on the R and θ coordinates centered on the own ship, so the helmsman's thinking ability is not unnecessarily burdened. , accurate steering decisions can be made intuitively.

In the example shown in FIG. 2, if radar and sonar detection images are simultaneously displayed on the cathode ray tube surface, vessel maneuvering judgment can be made more accurately. At this time, it is convenient to color-code the scales, marks, and detection images so that each piece of information can be distinguished at a glance.

Further, in the embodiment shown in FIG. 3, the steering is performed using an autopilot device, but the same result can be obtained even if the steering is performed using a steering wheel or a steering lever. In this case, since the rudder angle is directly instructed, a mark in a different color from the rudder angle mark L may be displayed instead of the ship shape mark S _p .

It should be noted that the same effect can be obtained by using a flat display using a liquid crystal element or a plasma display element instead of the cathode ray tube display described in the embodiment.

[Brief explanation of the drawing]

Fig. 1 is a front view of the conventional device, Fig. 2 is a plan view showing an example of the display screen of the present invention, Fig. 3 is a block diagram showing an embodiment of the present invention, and Fig. 4 is the movable ship-shaped ROM in Fig. 3. The explanatory diagram, FIG. 5, is a block diagram showing another embodiment of the present invention. S _p ...Reference ship shape mark, SM...Movable ship shape mark, D...Fixed scale, G...Movable scale, L...Rudder angle mark, θL...Rudder angle scale, T...Tide current mark,
W...Wind direction mark.

Claims (1)

[Scope of utility model registration request] A first device that stores rudder angle data from the rudder angle detection device.
a storage means, a second storage means for storing the gyroscope direction, an own ship mark generation means, a fixed azimuth scale generation means, a rudder angle fixed scale generation means, a rudder angle mark generation means, and the direction of the gyroscope compass. a movable scale generating means indicating the own ship mark, a fixed azimuth scale,
A control device that controls the fixed scale for rudder angle, the rudder angle mark, and the output direction of the movable scale generating means so that each mark and scale are displayed concentrically on a common display with the own ship mark as the center. A display device for ship maneuvering consisting of.