JPH03170813A - Display apparatus for assistance in manoeuvering ship - Google Patents

Abstract

PURPOSE:To display the true direction and velocity of the wind by selecting the best data from calculating data and correcting the measuring data of the direction and velocity of the wind. CONSTITUTION:The inspecting data of the direction and velocity of the wind and also the data from a gyro compass, an electromagnetic log, a sound wave log are inputted to an operating means alpha0 by a group of sensors Se. The operating means alpha0 selects the best data from the calculating data related to the velocity and moving direction of a ship in accordance with the circumstances, and corrects the inspecting data of the direction and velocity of the wind, thereby obtaining the true direction and velocity of the wind. A data inputting part alpha01 converts the data detected by the group of sensors Se to digital data. A CPUalpha02 calculates the true direction and velocity of the wind from the inputted data according to a program stored in a ROMalpha04, outputting the same to a display device (h) via a display output I/Falpha05. A RAMalpha03 works as a buffer when the CPUalpha02 makes operations, and a status inputting part alpha06 inputs the switching information from a mode changeover switch SW1. Accordingly, the true direction and velocity of the wind corrected with the use of the best ship velocity can be known at all times.

Description

[Detailed description of the invention] Industrial application field> The present invention relates to a ship maneuvering support display device. This invention relates to a ship maneuvering support display device that improves the accuracy of data that must be corrected based on ship speed, and/or improves the image representation that displays the data in a form that is easier for humans to recognize. <Conventional technology> Ships are equipped with gyro compasses to obtain navigational data.
Sonic log, electromagnetic log. Radar. It is equipped with various navigation measuring instruments such as a wind direction/anemometer. For example, regarding wind direction and wind speed, observation data is relative to a moving ship, so generally a display device such as an anemometer is used to display the signal from the relevant measuring device as is. Was. Separately, the signal from the corresponding measuring device is guided to a device that can display the ground speed, corrected course, etc. (segments are formed from LEDs, etc.), and the ground speed is calculated using an internal calculation means. After performing calculations such as corrections and course corrections, the instrument result data is sent to the latch/driver circuit via, for example, a receiver, while the display address is sent to the receiver. The 4-bit data. Ground speed and corrected course were displayed using 4-bit addresses, each with 3 digits. Problems to be Solved by the Invention> By the way, if we consider only the former of the above, that is, if we want to know the true wind direction and true wind speed regarding the wind direction and wind speed, the currently displayed relative wind direction and relative wind speed The calculation must be performed by subtracting the speed component of the ship from If we consider only the latter of the above, the navigation data necessary for ship maneuvering is not only the above-mentioned ground speed and corrected course. However, if you try to display other data with this kind of conventional ship maneuvering support display device,
Naturally, it is necessary to provide a display device to display the pond, so the overall display area becomes quite large, making it impossible to see it comprehensively. In addition, the number of cables between the main processing unit and the ship maneuvering support display increases, making the entire device larger and more complex. This can lead to problems that spread to other problems, such as complicating maintenance. The problem was that it was unavoidable that the The present invention has been made in view of the above-mentioned problems of the conventional technology, and its purpose is to perform a calculation process based on information from various measuring devices to display a display device. The objective is to provide a ship maneuvering support display device that can display information with high accuracy in a format that is easy to recognize by operators and observers, thereby realizing more stable and efficient ship maneuvering. One of its objectives is to always use the most accurate ship speed to determine relative wind direction. True wind speed from relative wind speed. The operator calculates the true wind speed and uses the display device to
The purpose of the present invention is to provide a ship maneuvering support display device that can display information with high accuracy in a form that is easy to recognize by observers, thereby realizing more stable and efficient ship maneuvering.Furthermore, one of its purposes is to , the relative relationship between own ship position and target object on the display. M.A. To provide a ship maneuvering support display device that can display various information such as tidal current disturbances in a polar display that is easy to recognize by operators and observers, and can realize more stable and efficient ship maneuvering. ．． <Means for Solving the Problems> In order to achieve the above object, the present invention provides a ship maneuvering support display device configured to display information necessary for ship maneuvering based on various navigation data. : A mode selection means for setting which mode of the navigation data is used for calculation, and a measurement nose related to the ship speed and the direction of movement is performed based on the navigation data selected by the mode selection means. , a calculation means for correcting the observed wind direction and wind speed data by selecting the best data according to the situation from among the calculated data, and calculating the true wind direction and true wind speed; A display device for displaying the value of true wind speed. (b): A signal processing operation i1i1J 9llf-stage that inputs the navigation data and status signals for screen switching and screen display scale switching, processes these signals, and outputs the data necessary for display as a control signal. , a graphics controller that inputs data from the signal processing control means and converts it into graphics data; and a polar display of the relative relationship between the ship's position and the target based on control signals from the graphics controller. It is characterized by having an R function that variably displays various information in a polar coordinate system. When looking at the true wind direction and true wind speed, the i-measured data of wind direction and wind relation, which are relative data to 4i%, and the gyro compass. f of the ship itself obtained from electromagnetic logs, sonic logs, etc.
Using calculation data related to the ship's speed, direction of movement, course, etc. calculated from lJ measurement data, the best data is selected from these data according to the situation to correct the observed data of wind direction and wind speed. By doing so, the true wind direction and true wind speed are calculated and displayed. We also considered coordinate display and calculated signals from the various observation data to determine the inner ship's position and own ship's course. Navigation data necessary for ship maneuvering such as target position and ship speed (as a serial signal such as RS422) is guided to the signal processing calculation unit and is controlled by the signal processing calculation unit and the processing calculation unit transmitted by the graphic controller unit, etc. After image signal processing is performed, a color graphic display is performed on the ship maneuvering support display. At this time, the main display on the ship maneuvering support tM display is in the polar coordinate system. In other words, the relative relationship between own ship position and target position is clearly displayed in the polar coordinate system, and at the same time, the signal processing calculation unit calculates the amounts of own ship course, m direction, set (draft) ~ direction, etc. Visibility is improved by calculating the relationship between objects and displaying them variably in a polar coordinate system. Embodiments> Examples will be described with reference to the drawings.

FIG. 1 is a system diagram of a ship maneuvering support display device that is a first specific embodiment of the present invention. 2 is a time chart for explaining FIG. 1, and FIG. 3 is a diagram for explaining FIG. 1. In Figures 1 to 3, 3e is a sensor group that observes various data necessary to calculate true wind direction and true wind speed, and at this time, set is a wind vane that outputs a synchronized signal.
Sa2 is an anemometer that outputs an AC voltage signal (wind vane.m speed meter is called Fushin Musume). Se3 is a gyro compass that outputs a synchronized signal (azimuth signal) + Sed is RS232C
Let the electromagnetic log + Se5 that outputs the signal be the sonic log that outputs the RS232C signal. α. inputs observation data of wind direction and wind speed, which is relative data to the ship detected by the sensor group SE, and observation data about the ship itself obtained from a gyro compass, etc., and calculates information related to the speed and direction of movement (course direction) of the ship. Using calculation data, select the best data according to the situation from among these calculation data, and calculate the wind direction,
It is a calculation means that calculates the true wind direction and true wind speed by correcting the measured data of M speed, and the calculation result is output to the display h to display the values of the true wind direction and true wind speed. ．． Specifically, data input section aaQ1+cptr (calculating means) α0 2 1 R A M (random access memory) α. 3, ROM (read only memory) α
04+Status input section α. 4 and display output 1/Fα.

I warn you from this. At this time, the data input section aα. , is a part for inputting data detected by sensor group se, and S/
D converter. It consists of an A/D converter, a serial data controller, etc., and converts data from the sensor (synchronized signal. AC@Li three signals, RS232C signals, etc.), CPUαO2 converts input data into digital data according to the procedure of the program stored in ROMαO4)! &'Calculate the true wind speed and output it to the display h via the display output 1/Fαo5. Here λA
Mα. 3 is CPU α. Output as a buffer during the calculation operation in step 2. Status input section α. 4 inputs switching information from a mode changeover switch (switch that sets which input data is used to calculate true wind direction and true wind speed) SW, which has switching positions for electromagnetic log mode and sonic log mode, for example. do. Here, when the content displayed on the display h is the true wind direction and true wind speed, the input data is the relative wind direction and relative wind speed, so the following calculation conditions (data conversion function) are stored in the It O Mαo4. By doing this, the CPU performs the conversion operation. Now, as input data, the relative wind direction (m/s) is Wf, the relative wind speed (m/s) is θr, and the own ship speed obtained when using the sonic log or electromagnetic log is Vχ, v1. When the own ship's course is θ, the true wind speed Vxw (Kt) in the χ direction and the true wind speed Vym (Kt) in the V direction are VX Ill = W1 ●c
o sθr Vx ◆・・・(1) Vyy=
W1-slnθf Vff ””■. Therefore, the true wind speed V. is, VII,= (VX w ' 10Vy w ” ) ”
= 13). However, V. When =O, let θau=Q. At this time, let θW represent the true wind direction relative to the ship's course direction, that is, the direction from which the wind is coming from relative to the course direction. This θW is θm
= arcs1n(Vgm/V*)...-(a)
It can be expressed as . However, when VχW<O, θW=π−θW. If VXW≧0 and θw < O, θW=θy+2x, and
If Vym≧0 when lVym/Vwl≧1, θw = K / 2 rVyW<O
Then, set it as θ1−π/2. Therefore, the true wind direction θ^ssm is θAaSIIl
"θW+θ ・(5).However, when θ^asm≧π/2, θA B S Ill
=θABII&+ 2π ●●− (6
). Based on these calculation conditions, the CPU α02 performs calculation operations based on the flowchart i1 such as the second I3iI, and a display is performed on the display h. That is, after the start, when the mode is read, the mode changeover switch SW is pressed.
．． Reads electromagnetic log mode or sonic log mode depending on the status. Next, use “Read Data” to read the necessary data depending on the mode. In other words, it is a wind vane when in electromagnetic log mode.
Anemometer. Reads data from the gyro compass and electromagnetic log, and when in sonic log mode, reads data from the wind vane, anemometer, gyro compass, and sonic log. Next, in "3L", calculate the true wind direction from the read data based on the above calculation conditions. Calculate the true wind speed. and “display”
Displays the true wind direction and true wind speed, which are the results of this calculation. In the above explanation, a gyro compass is used to detect the speed of the ship. Electromagnetic logs and sonic logs are used, and one of these logs can be selected at any given time, but there are other ways to determine the speed of a ship, such as GPS, Loran C, Decca, etc. It goes without saying that the same effect can be obtained by using various radars and other devices (GPS.
Loran C, Decca. Since position data will be input from radar etc., velocity can be easily obtained by differentiating these position data). In this case, it goes without saying that you should take appropriate measures such as configuring the data input section, adding a mode selector switch, and adding a program to calculate the ship's speed. Conventionally, this allows the relative wind direction to be adjusted when the ship is moving. The fact that only the wind speed could be directly observed was always corrected using the best ship speed to determine the true direction. You will be able to know the true wind speed at all times. By the way, the method mentioned above is true direction. Although only the true wind speed is displayed, it is possible to further expand this information and, in addition to these, display the information required for ship maneuvering by specifically configuring the following ship maneuvering support device. This will be explained using the drawings shown in Figure 4 and below. FIG. 4 is a block system diagram of a ship maneuvering support display device which is a specific embodiment of tt42 of the present invention, FIG. 5 is a diagram showing an example of a specific display displayed on the graphic display device of FIG. 4,
FIG. 6 is a diagram for explaining the serial signal input to FIG. 4, and FIG. 7 is a flowchart for explaining the operation of the fourth vinegar. In Figures 4 to 7, α1 is a signal processing unit that inputs navigation data and data status signals for screen switching and screen display scale switching, processes these signals, and outputs the data necessary for display as control signals. It is a calculation control means. This signal processing calculation control means α includes a serial/parallel converter 1, a status input circuit 4. Signal processing calculation unit (CPtJ)5. Address decoder 6. Program memory (ROM) 7 and random access memory (RAM)
Consists of 8. At this time, each R function of the signal processing calculation control means α operates as follows. The serial/parallel conversion unit 1 receives information such as own ship position, own ship course, target position, ship speed, etc. from the main processing unit MS (details will be described later) as shown in FIG.
4: Input the necessary navigation data to > as a serial signal (
For example, this input serial signal is converted into an 8-bit parallel signal and sent to the signal processing arithmetic unit (CI'LJ) 5 via the data path [181]. The output is distorted. here,
Reference numeral 2 is a screen changeover switch, which changes the image between own ship center 1 target position center and digital data display, and reference numeral 3 is a scale changeover switch, which changes the scale of the screen display. The status input circuit ilIlG4 is connected to the screen changeover switch 2 and the scale changeover switch 3, and inputs the open/closed state (status signal) of these switches and outputs 2 bits of data via the data path DB.
Send to PU5. This CPU 5 further includes a serial/parallel converter 1, a ROM in which a series of processing procedures such as the above-mentioned expressions (1) to (6) and related conditional expressions are written in advance. , RAM 8 for storing received data and address decoder 6 are connected to address buses (AO to A19) AB,
is connected, and address signals are sent and received. The main processing unit MS receives the signal from the sensor group Se described above with the signal conditioner Ms, converts it into a digital signal, and performs calculations to obtain the l1 ship position in the calculation unit Ms2. The format conversion unit Ms! converts the format to transmit the data string of the calculation result to your own account!
The operation of the main processing unit MS is shown in the upper part of FIG. Processing in the processing section′
It is written as ゛. Reference numeral 9 is a graphics controller (G.C);
The data from the signal processing calculation control means α (data sent from RAMS via the data path DB) is converted into graphic data, and the converted drawing data is sent to the graphic data bus (HDO to HD15) GDj
This G. Based on control signals from C, signals are sent to a function that displays the relative relationship between own ship's position and target on a polar scale, and also displays various information variably on a polar scale system.
This function is provided here by the video RAM 10, the parallel/serial converter 11 and, for example, CR'I' or LCI).
It consists of 12 graphic displays (ship maneuvering support display, hereinafter referred to as "display"). This function is available in G. The drawing data sent from the C9 is stored based on the same address signal sent from the G.C9 via the graphic address bus GA, and the parallel/serial conversion unit 11
, converts the parallel data (16 bits) sent from the video RAM 10 into a serial signal for display, and converts the parallel data (16 bits) sent from the video RAM 10 into a serial signal for display 12.
Based on the display serial signals sent from the ship, the relative relationship between own ship's position and the target object is determined in order to realize more stable and efficient ship maneuvering. Wind. As mentioned above, various information such as tidal current disturbance etc. is sent to the CPU/G. Based on the signal after signal processing with C etc., 4E! which is easy to recognize by operators/ltllllll! If you press the button in the position display, it will display a dot matrix color graphic. As a result, a display like the one shown in Figure 5 can be created. Furthermore, the fifth
As a display example of the diagram, own ship position display. Shows drift and set display. This will be explained in detail below. In FIG. 5, in the display 12, the CPU
YaG. C9 makes the relative relationship with the own ship's position clear by displaying polar coordinates on the main display with the target position as the center. At this time, as shown in the figure, when the target object is dangerous, the area is indicated by hatching to prevent the ship from entering the dangerous area. At this time, by displaying in the #J polar coordinate system, it is possible to express the form in a form that is easy for humans to recognize. Also, own ship's course. The wind direction and the length of the set (draft heading) symbol (this length is calculated and determined by C P LJ 5) are determined by the ship's speed. m
The larger the speed and drift, the longer it becomes, and the display becomes more appealing to human vision. At this time, the maximum and minimum length of the symbol is, for example, the wind direction (the true direction obtained by the above calculation), and the symbol is the wind speed of 3Kt (
(The reason for this is that when the wind is less than 3Kt, the wind no longer blows from a certain direction, and the wind direction symbol rotates around the ship's own position, which is unsightly.) Visibility is improved by calculating the quantitative relationships of directions, etc. in the signal processing arithmetic unit and displaying them variably using a polar system. Also, in the upper left corner of the display screen, the speed relative to water (displayed as L-SPD4.0), which is the speed input from the electromagnetic log, and the relative wind speed input from Fushingi, and the true wind speed Vv calculated from the above calculation formula. (
F. IND 5.0), and. Drift 《Drift speed, A-
DF'! '2.0) etc. can be displayed digitally to further increase the information density. The flow of the operation at this time is shown in the lower part of Figure 7 as "Processing on the ship maneuvering support display device". Effects of the Invention Since the present invention is configured as described below, it produces the following effects. According to claim m1, wind direction A is always calculated using the best speed of the ship. You can know the true i speed. According to claim 2, in addition to the effects of claim 1, by displaying polar coordinates on a color graphic display, the relationship between the own ship's position and the target position becomes clear, and in addition, the own ship's course. fi
Visibility can be improved by varying the length of direction symbols such as direction and set depending on their sizes, and furthermore, R3
By transmitting serial signals such as 4.22, information can be transmitted with fewer cables, and even if the amount of information increases, the number of cables does not increase, so problems like the conventional method do not occur. It can also achieve excellent effects.

[Brief explanation of the drawing]

FIG. 1 is a block system diagram of a ship maneuvering support display device that is a first specific embodiment of the present invention, FIG. 2 is a time chart for explaining FIG. 1, and FIG. 3 is a diagram similar to that shown in FIG. FIG. 4 is a block system diagram of a ship maneuvering support display device according to a second specific embodiment of the present invention, and FIG. 5 is a diagram showing a specific example displayed on the graphic display device of FIG. FIG. 6 is a diagram showing an example of a display, FIG. 6 is a diagram for explaining the serial signal input to FIG. 4, and FIG. 7 is a flowchart for explaining the operation of the fourth vinegar. DESCRIPTION OF SYMBOLS 1... Serial/parallel converter, 4... Data input circuit, 5... Signal processing arithmetic unit (CPU), 9
...Graphic controller (GC) 10...
Video RAM, 11...parallel/serial conversion section,
12...Graphic display (display). Figure 2 Figure 3

Claims (2)

[Claims] (1) In a ship maneuvering support display device configured to display information necessary for ship maneuvering based on various navigation data,
mode selection means for setting which mode of the navigation data is used for calculation; and calculations related to ship speed and movement direction based on the navigation data selected by the mode selection means; Calculating means for correcting the observed wind direction and wind speed data by selecting the best data according to the situation from among the calculated data and calculating the true wind direction and true wind speed, and the values of the true wind direction and true wind speed calculated by the calculating means. A ship maneuvering support display device comprising: a display device that displays; (2) In the ship maneuvering support display device according to claim 1, the navigation data and status signals for screen switching and screen display scale switching are input, and these signals are processed and the data necessary for display is output as a control signal. a graphic controller that inputs data from the signal processing calculation control means and converts it into graphic data, and calculates the relative relationship between the ship's position and the target based on the control signal from the graphic controller. It has the function of displaying the polar position and various information variably in the polar position table system.
A ship maneuvering support display device comprising: