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WO1987001209A1 - Dispositif d'affichage - Google Patents

Dispositif d'affichage Download PDF

Info

Publication number
WO1987001209A1
WO1987001209A1 PCT/JP1985/000464 JP8500464W WO8701209A1 WO 1987001209 A1 WO1987001209 A1 WO 1987001209A1 JP 8500464 W JP8500464 W JP 8500464W WO 8701209 A1 WO8701209 A1 WO 8701209A1
Authority
WO
WIPO (PCT)
Prior art keywords
data
display
radar
display device
address
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP1985/000464
Other languages
English (en)
Japanese (ja)
Inventor
Katsuichi Murayama
Hideki Takei
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nagano Nihon Musen KK
Original Assignee
Nagano Nihon Musen KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nagano Nihon Musen KK filed Critical Nagano Nihon Musen KK
Priority to PCT/JP1985/000464 priority Critical patent/WO1987001209A1/fr
Publication of WO1987001209A1 publication Critical patent/WO1987001209A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/04—Display arrangements
    • G01S7/06—Cathode-ray tube displays or other two dimensional or three-dimensional displays

Definitions

  • information such as direction, speed, water depth or altitude, radar image, etc. necessary for navigation of a ship, an aircraft, etc. can be multiple-displayed by an electro-optical segment arranged in polar coordinates with images, characters, etc. Regarding display devices.
  • a radar brown tube has been widely used as a display device of this type installed in ships and the like.
  • the depth is long, and the size and weight of the entire device are large.
  • the installation space is relatively large in a limited space such as a ship or an aircraft, and the degree of freedom for the installation place is limited, such as floor installation.
  • it consumes a large amount of electricity and requires a large power source, which is economically disadvantageous.
  • a high voltage circuit is used. It is difficult to use (high-voltage line).
  • the present invention solves the problems of the conventional display device, and an object of the present invention is to provide a display device that is small (thin), lightweight, and consumes very little power.
  • Another object of the present invention is to provide a display device capable of easily displaying all the information necessary for navigation such as heading, speed, etc. in a multiplex manner.
  • the present invention further has its own collision prevention function.
  • An object of the present invention is to provide a display device that can do this, can instantly grasp the trends of multiple targets, and can determine whether or not there is a collision and generate an alarm or the like based on this.
  • the display device has a data input section for bearing, speed, wind direction, wind speed, water depth or altitude, radar image, other information necessary for navigation, and a small amount of data for each data input facing the data input section.
  • a data processing unit with extremely polar processing capability a storage unit that stores the output data of each data processing unit, and one or more of the stored data are selected and the selected data are mixed and output.
  • the azimuth, speed, wind direction, wind speed, water depth or altitude, radar image, etc. are displayed in multiple layers on the optical display panel, and the information to be displayed can be selected as necessary.
  • the present invention uses a liquid crystal display cell as an electro-optical segment to achieve low power consumption and a small size and thinness.
  • radar data based on a fixed azimuth is stored in the storage unit at a fixed time interval, and the data output unit synthesizes the radar image for each time with changes in shading or color. This enables the radar image to display a track that shows the passage of time so that the risk of a collision can be checked at a glance and the direction to avoid can be easily determined.
  • FIG. 1 is a diagram showing a block circuit configuration of a preferred display device according to the present invention
  • FIG. 2 is a front view of an optical display panel used in the device
  • FIG. 3 is a display state.
  • Figure 4 is a front view of the same display panel
  • Figures 4 to 6 show the radar image of the device, the image in the memory, and the memory map in the memory.
  • Fig. 7 and Fig. 8 are flowcharts showing the processing procedure for each subroutine in the same device
  • Fig. 9 is a flowchart showing the direction data processing step of Fig. 7.
  • Figure, No. 10 Fig. And Fig. 11 show the optical display panel in principle to explain Fig. 9, and
  • Fig. 12 shows the radar data processing step of Fig.
  • FIG. 7 shows a flowchart.
  • Fig. 13 shows a radar image to explain Fig. 12;
  • Fig. 14 shows the contents of the memory and compares them with Fig. 13;
  • Fig. 15 shows Fig. Fig. 7 is a flow chart showing the speed data processing step,
  • Fig. 16 is a diagram showing a part of the optical display panel, and
  • Fig. I 7 is a diagram for explaining Fig. 15.
  • Figures showing the movement of the ship for explaining the collision prevention function Figures 18 to 21 show the radar image and the corresponding image in the storage section concerning the movement of the ship in Figure 17
  • Fig. 22 shows a case where the image in the storage section is displayed on the optical display panel, and
  • Fig. 23 shows a part of the optical display panel based on the collision detection processing function.
  • the figure is a flowchart showing the collision detection process step in Fig. 8. 'The best mode for carrying out the invention
  • Reference numeral 2 indicates a data input section.
  • This data input section 2 is provided with an input terminal not shown in the figure.
  • Each input table has azimuth data S 1, radar data S 2, wind direction wind speed data S 3, Depth data S 4, position data S 5, and speed data S 6 are input from each sensor.
  • the data input unit 2 includes temporary storage circuits 1 to 15 which are connected to the input terminals to temporarily store the data S 1 to S 6 described above.
  • a shift register, .RAM (Random Access Memory) or the like can be used.
  • the data input section 2 is further connected to the data processing section 3. In this processing unit 3, data processing of the data read from the temporary storage circuits 10 to 15 is performed.
  • This processing is executed according to a predetermined program corresponding to each data 1 to S5 as described later.
  • This processing function section is indicated by 20 to 25 in the figure, but it is specifically processed by software such as a microcomputer. Therefore, the CPU (central processing unit) that configures the microcomputer as the data processing unit 3 and the ROM (read-only memory) that stores the program for executing the data processing. Memory), RAM and other hardware.
  • the data processing unit 3 converts the input data into the corresponding polar coordinate address for displaying on the optical display panel.
  • the data processing unit 3 has at least this polar coordinate conversion processing capability and can execute various processes as necessary.
  • the data processing unit 3 is connected to the storage unit 4. -The output data processed by the data processing unit 3 is stored in the storage unit 4.
  • This storage unit 4 is composed of storage image paths 30 to 3 ⁇ corresponding to each data.
  • the memory circuit 31 is provided with a plurality of, for example, four dynamic circuits RA 1 to M 4. Each dynamics A M is controlled by the main timing circuit unit 7 and stores the data at a predetermined time in R A M units.
  • the memory circuit 31 may use one RAM and four bit output terminals may be used instead of M1 to M4. In this case, synthesis can be performed simply and easily.
  • the collision risk judgment unit 8 is provided, and M l ⁇ !
  • the radar data stored in 14 is automatically detected when it is arranged under certain conditions and an alarm is issued. This is the part related to the collision prevention function, and will be described in detail later.
  • the storage unit 4 is further connected to the data output unit 5. Data output section
  • Reference numeral 5 includes a selection circuit for selecting which of the data is to be displayed, and a mixing circuit for mixing the selected data and applying it to the display section 6.
  • the selection circuit is given a select control word S c from the selection switch, which can be arbitrarily selected from the outside.
  • a data output section can be formed by software using the microcomputer, or can be formed by a hardware such as a switching element.
  • the mixing circuit can be composed of software, or can be composed of hardware such as logic circuit.
  • the selected and mixed data are given to the display unit 6.
  • the display unit 6 is composed of a drive unit 40 and an optical display panel 41, and the drive unit 40 further includes a display data storage unit 42 for storing data from the data output unit 5 and a display data storage unit 42.
  • the display element drive circuit 4 3 for operating the display panel 4 1 corresponding to the display data read from the display data storage section 4 2 and the display data storage section 4 2 and the display element drive circuit 4 3 described above. It consists of a display timing circuit 4 4 which controls the operating timing.
  • the device 1 is provided with the main timing circuit section 7 to control the entire timing and also with a necessary circuit section such as a power supply circuit section (not shown).
  • a necessary circuit section such as a power supply circuit section (not shown).
  • optical display panel 41 will be specifically described with reference to FIG.
  • the display panel 4 1 is composed of a number of electro-optical segments, that is, liquid crystal display cells (L CD) 50 ⁇ , arranged in polar coordinates.
  • the display panel 41 like this can be configured by a printing means such that a large number of display cells 50 are arranged on a transparent plate having a disk shape.
  • Display In the inner area A 1 of the panel 41 60 are arranged in the circumferential direction around the central circle 51 and in 5 steps in the radial direction.
  • 180 pieces are arranged in the circumferential direction and 35 steps are arranged in the radial direction.
  • a polar display screen with a total of 6600 dots is configured.
  • FIG. 1 illustrates the case of a ship.
  • 60 is a speed display, and the length corresponding to the speed is displayed in the radial direction from the upper circumference of the central circle 51.
  • 6 1 indicates the water depth (depth from the ship to the bottom of the sea), which is displayed at the position corresponding to water ⁇ in the central circle 5 1 and the lower square in the radial direction.
  • the water depth will be altitude.
  • 6 2, 6 3, 6 4 and 6 5 are directions indicating north, east, south and west, respectively, and these directions are changed according to the angle by setting the traveling direction of the ship to the upper end of the display panel 41. It will be displayed graphically.
  • 6 6 is the apparent wind direction measured on the ship ⁇ Wind speed display
  • 6 7 is the actual wind direction obtained by considering the speed and direction of the ship ⁇ Wind speed display, and these are the maximum wind directions It is indicated by the shading corresponding to the wind speed from the outer cell 50 toward the center.
  • 6 8 is the display of the current position of the ship, which is indicated by letters.
  • 6 9 shows an image of, for example, an island shadow by a radar. Next, the address relationship between the display panel 4 1 and the storage unit 4 regarding the radar image will be described.
  • Fig. 4 shows the data D l, D 2 on the radar image address
  • FIG. 5 shows the data D l, D 2 on the memory address in the memory 4.
  • the address of D 1 becomes (r 38, ⁇ 137) and the address of D 2 becomes (r 36, ⁇ 131) on the radar image.
  • D 1 becomes (38, 140), and D 2 becomes (36, 134).
  • the address on the radar image moves to the address in RAM by a predetermined conversion process, but in this case, the movement is only in the circumferential direction (hereinafter referred to as the direction), and in the radial direction ( In the following,) "is fixed).
  • the memory map becomes as shown in Fig. 6. This conversion uses the following radar image as a reference for a fixed bearing even if the vessel changes course. This is because the north direction is converted to address 0 in the 0-direction address.
  • the simple display is displayed by the flow chart shown in Fig. 7, and each step shows the subroutine of each information unit.
  • 7 0 is a processing chip for azimuth data
  • 7 1 is a processing step for radar data
  • 7 2 is a wind direction
  • 7 3 is a processing step for depth data
  • 7 4 is a position.
  • a data processing step, 7 5 is a speed data processing step
  • 7 6 is a processing step for transferring the processed display data to the storage unit 4.
  • the collision prevention display is interrupted by the flowchart shown in Fig. 8.
  • the processing step 70 for azimuth data and the processing step 71 for radar data are set to H, and the processing step 80 for collision detection is performed.
  • Tal signal is converted to the direction address SN (north direction) on the display panel 41.
  • the radar data is processed by the flow chart shown in Fig.12. Now, assuming that the radar is ⁇ I (Plan Position Indication) method, the input data will be the swept trigger pulse from the radar and the detection output for display. As an input method, this detection output is compared with the clock synchronized with the swept trigger pulse, and for example, a peak hold circuit (not shown) is reset at the rising edge of the clock. And read on the falling edge.
  • the input scan starts when the sweep trigger is entered. However, this starts from the 5 ⁇ th trigger pulse force. In other words, the 5 ⁇ th data is read into memory at address 0 of the 5-way address: and. Also, depending on the timing of the clock, it is read in the direction of 7 "for each address. If there is an image, it will be” 1 ", and if there is no image, it will be: ', 0". That is, the scan is radial from the center.
  • Figure 13 shows the image ⁇ reflected on the radar.
  • the traveling direction of the ship is the direction of arrow HI in the figure.
  • the north direction is proceeding clockwise from the 0 direction (travel direction) of the ⁇ direction address by 5 N, and the image E is in the north direction.
  • Address ⁇ is proceeding counterclockwise.
  • the radar image shown in Fig. 13 is read into the memory address of the storage unit 4 shown in Fig. 14.
  • the north direction is always stored in memory at address 0 of the direction address.
  • image acquisition (scan of image data) to the memory always starts from the north direction.
  • This collision detection function is based on the principle of ⁇ that radar data is always kept in a certain direction (north) so that the relative positional relationship with other ships does not change even if the ship's direction changes suddenly, as described above. Is used as a reference.
  • own ship F 1 and another ship F 2 are in the positions shown at times t 1, t 2, t 3 and t, respectively, as shown in FIG. Own ship F 1 travels at 10 knots, -other ship F 2 travels at 20 knots, and own ship F 1 changes its course by about 90 'at P 1 point and own ship F 1 at P 2 point. 1 and It is assumed that another ship F 2 may collide.
  • the direction of the north is the arrow H 2.
  • the direction address is 135 as shown in Fig. (B).
  • the position of own ship F 1 is as shown in Fig. 20 (A) and Fig. 21 (A) on the radar image, and from the center Q, respectively. L 3 and L 4 are separated.
  • the memory address is as shown in Figure 20 (B) and Figure 21 (B), respectively.
  • the radar data at times t 1 to t 4 are stored in the above-mentioned radar data storage circuit 3 1 in M 1 to M '4, respectively, as shown in Fig. 22 (A). They are arranged in a straight line in the r direction. Therefore, if the data in the memory circuit 31 is read out at the same time and displayed on the display panel 41, the result is as shown in (B) of the figure.
  • the address number in the r direction is X
  • the address number in the S direction is ⁇
  • the display data of each address after radar data composition is D
  • the boundary line R shown in Fig. 22.
  • the address number in the r direction located at the outermost contour is Z
  • first the sequential scanning is performed from the center of the radar image, and the memory inside the boundary line R is first scanned. Read the contents.
  • the image on the display panel 41 is displayed in different gradations or gradations such that the brightness increases as t 1 to t 4 in order to distinguish past data.
  • the number of tracking targets is unlimited within the number of pixels.
  • the tracking target can display several levels of gradation, It is possible to visually recognize the recognition of "elapsed time of traces" etc. with the naked eye, and it is possible to easily determine in which direction to avoid.
  • the judgment can be easily done by reading with a microcomputer or the like.
  • the risk determination unit 8 takes in radar data that are sequentially stored at regular time intervals, and it is confirmed that there is data that heads toward the ship or the aircraft according to the time passage in those data. By reading it, it is possible to automatically predict the collision risk.
  • the software and the device can be simplified, and the device itself can be made smaller and lighter. ,
  • each storage unit 4 may be 6.6 kb i t e '. Therefore, the storage capacity is 1/3 or less compared to the radar video memory used for the well-known radar single-brown tube.
  • the optical display panel was explained as being composed of many segments of the liquid crystal display cell, but the segments include the liquid crystal display cell and the optical display tube.
  • An electroluminescence display cell, a light emitting diode, a plasma display display cell, etc. may be used.
  • the optical display panel when using these, the It can operate with low current consumption, and can be made lightweight and thin.
  • the display panel 41 in the example is a circular display with a diameter of 7 inches.Compared with a similar 7-inch brown tube, the volume is about 1/7 and the weight is about 1%. Becomes
  • the azimuth, speed, wind direction, wind speed, water depth or altitude, radar image, current position, etc. are set to the length, angle.
  • the information required for ships and aviation can be simultaneously displayed on a single screen using figures and characters, so that the navigation status of a ship or aircraft can be grasped at a glance, and the display is a liquid crystal display cell. Since it is composed of an electro-optical segment, it can operate at low voltage and low current consumption, and it can be made lighter and thinner.
  • the display device is suitable as a radar to be mounted on a ship, an aircraft, etc., and is also suitable as a collision prevention radar for displaying general navigation information.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Traffic Control Systems (AREA)

Abstract

Dispositif d'affichage possédant une fonction radar et servant à afficher des informations permettant d'éviter des collisions ainsi que les informations nécessaires à la navigation, telles que l'azimut, la vitesse, la direction du vent, la vitesse du vent, la profondeur de l'eau ou l'altitude, l'affichage radar et analogues. L'unité d'affichage est équipée d'un panneau d'affichage optique (41) dans lequel un certain nombre de segments électrooptiques tels que des cellules d'affichage à cristaux liquides sont disposées suivant des coordonnées polaires. Le panneau d'affichage (41) affiche les données provenant des capteurs fournissant différentes informations, les données introduites étant traitées afin de leur conférer un format qui facilite la lecture, à l'aide d'un système de traitement utilisant un microordinateur et analogues.
PCT/JP1985/000464 1985-08-22 1985-08-22 Dispositif d'affichage Ceased WO1987001209A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP1985/000464 WO1987001209A1 (fr) 1985-08-22 1985-08-22 Dispositif d'affichage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1985/000464 WO1987001209A1 (fr) 1985-08-22 1985-08-22 Dispositif d'affichage

Publications (1)

Publication Number Publication Date
WO1987001209A1 true WO1987001209A1 (fr) 1987-02-26

Family

ID=13846542

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1985/000464 Ceased WO1987001209A1 (fr) 1985-08-22 1985-08-22 Dispositif d'affichage

Country Status (1)

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WO (1) WO1987001209A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989004003A1 (fr) * 1987-10-30 1989-05-05 Allied-Signal Inc. Affichage du radar meteorologique, de la vitesse verticale et des informations relatives au trafic

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5249993Y2 (fr) * 1976-08-28 1977-11-12
JPS562315B2 (fr) * 1976-06-16 1981-01-19
JPS565946B2 (fr) * 1971-09-22 1981-02-07
JPS5848631Y2 (ja) * 1977-07-29 1983-11-07 株式会社光電製作所 パタ−ン表示装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS565946B2 (fr) * 1971-09-22 1981-02-07
JPS562315B2 (fr) * 1976-06-16 1981-01-19
JPS5249993Y2 (fr) * 1976-08-28 1977-11-12
JPS5848631Y2 (ja) * 1977-07-29 1983-11-07 株式会社光電製作所 パタ−ン表示装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989004003A1 (fr) * 1987-10-30 1989-05-05 Allied-Signal Inc. Affichage du radar meteorologique, de la vitesse verticale et des informations relatives au trafic
US4914733A (en) * 1987-10-30 1990-04-03 Allied-Signal, Inc. Traffic advisory-instantaneous vertical speed display

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