JP2011232827A - Altitude information display method and altitude information display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an altitude information display method and altitude information display device capable of intuitively grasping the altitude of an aircraft without using the differences of display colors and line types.SOLUTION: The altitude at which an aircraft flies is divided into a plurality of altitude bands L(i), a drawing area J(i) corresponding to each altitude band L(i) is divided and displayed on a display B, a drawing area J(i) corresponding to an altitude L(i) at which an aircraft flies is selected for each aircraft on the basis of the altitude h(d) of the aircraft acquired by a radar system 2, and a symbol M(d), the altitude h(d) and identification information d indicating the position and advancing direction of the aircraft are displayed in the selected drawing area J(i). That is, by classifying and displaying symbols of a plurality of aircrafts for each altitude band at which the aircraft flies, the altitude of the aircraft can be intuitively and easily grasped according to a difference in a drawing area even without changing display colors and line types used for drawing symbols of aircraft.

Description

  The present invention relates to an improvement in an altitude information display method and altitude information display apparatus that sequentially updates and displays aircraft position, traveling direction, altitude and identification information acquired by a radar system on a display.

  Based on the aircraft position, traveling direction, altitude, and identification information obtained by the radar system, the symbol, altitude, and identification information indicating the aircraft position, traveling direction, and the identification information are sequentially updated in the drawing area set on the display. Altitude information display devices for display are already known as Patent Document 1 and Patent Document 2, for example.

In the altitude information display device disclosed in Patent Document 1, for example, as shown in FIG. 9, a single drawing area J set on the display B is set to a symbol M1 indicating the position and traveling direction of the aircraft in the horizontal direction. , M2, M3,... And call signs d1, d2, d3,... Functioning as identification information unique to each aircraft in correspondence with the symbols M1, M2, M3,. The altitudes h1, h2, h3,... Of each aircraft are displayed with characters and numerical values.
The air traffic controller identifies the aircraft from the characters and numerical information of the call signs d1, d2, d3,... And displays symbols M1, M2, M3,. The position of the aircraft in the horizontal direction is grasped from the display position, the altitude of the aircraft is grasped from numerical information such as h1, h2, h3,..., And wedge-shaped symbols M1, M2, M3,. However, it is difficult to intuitively grasp the altitude of the aircraft from numerical information such as h1, h2, h3,.

Therefore, Patent Document 2 proposes a method of changing the display colors of the symbols M1, M2, M3,... Corresponding to the altitude zone in order to make it easier to grasp the altitude of the aircraft.
If the altitude is clearly indicated by the display color difference, an intuitive grasp of the altitude is possible, but since many colors overflow in the drawing area on the display, more important status information, for example, When it is necessary to display information such as a failure of the wireless device or the occurrence of hijacking, there is a negative effect that it is difficult to display these status information prominently.

Further, as a technique for easily displaying information displayed on an air traffic control display according to various conditions, in addition to color coding, for example, as disclosed in Patent Document 3, airspaces differing at each altitude Is known by expressing the difference between line types such as straight lines and dotted lines.
The airspace has a large display size on the display, so it can be distinguished by the difference in line type. However, the aircraft symbol has a remarkably small display size on the display, so it is difficult to distinguish between the line types that draw the symbol itself. Therefore, even if the line type for drawing the symbol is changed according to the altitude, it is difficult to grasp the difference in altitude from the display state of the symbol.

Japanese Patent Laid-Open No. 9-330499 Japanese Patent Laid-Open No. 11-242076 JP 2000-309299 A (paragraph 0010, FIG. 4)

  Accordingly, an object of the present invention is to provide an altitude information display method and altitude information display apparatus that can intuitively grasp the altitude of an aircraft without using a difference in display color or line type.

The altitude information display method of the present invention includes a symbol representing an aircraft position and a traveling direction in a drawing area set on a display based on the aircraft position and traveling direction, altitude and identification information acquired by a radar system. An altitude information display method for sequentially updating and displaying altitude and identification information, and in order to achieve the object,
Divide the aircraft's flying altitude into multiple altitude zones without overlapping, and divide and display the drawing area corresponding to each altitude zone on the display without overlapping,
Based on the altitude of the aircraft acquired by the radar system, a drawing area corresponding to the altitude zone in which the aircraft flies is selected for each aircraft, and a symbol and altitude indicating the position and traveling direction of the aircraft in the selected drawing area, and It has a configuration characterized by displaying identification information.

Further, the altitude information display device of the present invention represents the position and traveling direction of the aircraft in the drawing area set on the display based on the position, traveling direction, altitude and identification information of the aircraft acquired by the radar system. It is an altitude information display device that sequentially updates and displays the symbol, altitude and identification information, and in order to achieve the same object as described above,
A display mode storage means for storing a plurality of altitude zones obtained by dividing the altitude of the aircraft without overlapping and the drawing area setting conditions corresponding to each altitude zone without overlapping,
Drawing area display control means for dividing and displaying on the display without overlapping the drawing area for each altitude zone based on the setting condition stored in the display mode storage means;
A display data extracting means for extracting the position and traveling direction and altitude of the aircraft and the identification information acquired by the radar system;
A drawing area selecting means for searching the display mode storage means based on the altitude of the aircraft acquired by the display data extracting means and selecting a drawing area on the display corresponding to the altitude zone including the altitude of the aircraft;
Real data display control means for displaying a symbol representing the position and traveling direction of the aircraft, altitude and identification information in the selected drawing area based on the setting conditions of the drawing area selected by the drawing area selection means It has the structure characterized by this.

The altitude information display method and altitude information display apparatus according to the present invention divides the altitude at which an aircraft flies into a plurality of altitude zones, divides and displays a drawing area corresponding to each altitude zone on a display, and acquires it by a radar system. A drawing area corresponding to the altitude zone where the aircraft flies is selected for each aircraft based on the altitude of the aircraft, and a symbol, altitude and identification information indicating the position and traveling direction of the aircraft are displayed in the selected drawing area. Therefore, a plurality of aircraft symbols are collectively displayed in a drawing area corresponding to each altitude zone in a state where the symbols are sorted for each altitude zone where the aircraft flies.
Therefore, it is possible to intuitively and easily grasp the altitude of the aircraft by the difference in the drawing area without changing the display color and line type used for drawing the aircraft symbol, and the specific altitude zone (the altitude zone of interest) It is possible to accurately grasp the flying aircraft.
In addition, since various display colors and line types are not required for the display of aircraft symbols, more important status information, such as information on the occurrence of wireless device failures or hijacks, can be displayed. It becomes possible to make it stand out by the difference.

It is the functional block diagram which simplified and showed about the structure of the high degree information display apparatus of one Embodiment to which this invention is applied. It is the block diagram which simplified and showed the hardware constitutions of the altitude information display apparatus of the embodiment. A control program for causing the CPU included in the altitude information display apparatus of the embodiment to function as a drawing area display control means, a display data extraction means, a drawing area selection means, an actual data display control means, an area transition determination means, and a blinking control means It is the flowchart which showed the outline of the structure of. It is a continuation of the flowchart which showed the outline of the structure of the control program. It is a continuation of the flowchart which showed the outline of the structure of the control program. It is the conceptual diagram shown about the example of the logical structure of the display mode memory | storage table which functions as a display mode memory | storage means of the altitude information display apparatus of the embodiment. It is the conceptual diagram which showed the example of a display of the drawing area on a display in case the altitude which the aircraft flies is divided into 3 without overlapping. It is the conceptual diagram which showed the example of a display of the drawing area on a display in case the altitude which an aircraft flies is divided into 4 without overlapping. It is the conceptual diagram which illustrated the display aspect of the drawing area on a display in a well-known altitude information display apparatus.

  Next, an example is given about the form for implementing this invention, and it demonstrates concretely with reference to drawings.

  FIG. 1 is a functional block diagram schematically showing a configuration of an altitude information display device 1 according to an embodiment to which the present invention is applied.

  The altitude information display device 1 is based on the horizontal position (x, y) and traveling direction and altitude h (d) of the aircraft acquired by the radar system 2 and the call sign d that functions as aircraft identification information. Altitude information display that sequentially updates and displays the symbol M (d) representing the position (x, y) and the traveling direction of the aircraft, the altitude h (d), and the call sign d in the drawing area J set on B Device.

The altitude information display device 1 is configured to correspond to a plurality of altitude bands L (i) obtained by dividing the altitude at which the aircraft flies without overlapping, and a drawing area J on the display B corresponding to each altitude band L (i). Display mode storage means A that stores the setting conditions of (i) without duplication;
A drawing area display control means C for dividing and displaying the drawing area J (i) for each altitude zone L (i) on the display B based on the setting condition stored in the display mode storage means A without overlapping. When,
Display data extraction means D for extracting the aircraft position (x, y) and traveling direction, altitude h (d) and call sign d acquired by the radar system 2;
On the display B corresponding to the altitude zone L (i) including the altitude h (d) of the aircraft by searching the display mode storage means A based on the altitude h (d) of the aircraft acquired by the display data extraction means D A drawing area selecting means E for selecting a drawing area J (i) of
Based on the setting conditions of the drawing area J (i) selected by the drawing area selection means E, the symbol M (d) indicating the position (x, y) and the traveling direction of the aircraft, the altitude h (d), and the call sign An actual data display control means F for displaying d in the drawing area J (i) is provided as an indispensable constituent element (where i = 1 to n).

The altitude information display device 1 of this embodiment further includes a drawing area storage means G that sequentially updates and stores the drawing area J (i) selected by the drawing area selection means E for each call sign d;
An area transition determination means H for determining for each call sign d whether or not a change has occurred in the drawing area J (i) stored in the drawing area selection means G;
When the area transition determination means H detects a change in the drawing area J (i), the symbol M (d) corresponding to the changed call sign d in the drawing area J (i) is blinked for a preset time. Blinking control means I is provided.

The display data extraction means D has a state information extraction function for extracting aircraft state information acquired by the radar system 2.
When the display data extraction means D detects predetermined state information, the actual data display control means F displays a symbol M (d) corresponding to the call sign d of the aircraft in advance with a preset highlight color such as red. It has a display color change function to change to.
The “predetermined state information” referred to here is important information such as a failure of a wireless device or occurrence of hijacking.

  FIG. 2 is a simplified block diagram showing the hardware configuration of the altitude information display apparatus 1.

  The main part of the altitude information display device 1 includes a microprocessor 3 (hereinafter simply referred to as CPU 3) that controls the altitude information display device 1 as a whole, and a read-only memory 4 (hereinafter referred to as a basic start program). Connected to the radar system 2, a non-volatile memory 5 for storing various parameters, a random access memory 6 (hereinafter simply referred to as a RAM 6) used for temporary storage of data, etc. And the CPU 3 function as the above-described drawing area display control means C, display data extraction means D, drawing area selection means E, actual data display control means F, area transition determination means H, and blinking control means I. A hard disk 8 storing a control program (see FIGS. 3 to 5) for causing the program to be executed.

  The input / output circuit 9 of the CPU 3 is connected to the display B and the keyboard 10 for inputting set values.

The display mode storage means A of this embodiment is configured using a part of the storage area of the nonvolatile memory 5, and the drawing area storage means G is configured using a part of the storage area of the RAM 6.
Of course, a part of the storage area of the hard disk 8 is used as the display mode storage unit A, and the information of the display mode storage unit A is read from the hard disk 8 and made resident in the RAM 6 when the altitude information display device 1 is activated. It doesn't matter. In this case, the RAM 6 also functions as the display mode storage means A.

The radar system 2 is a so-called secondary monitoring radar having a primary radar function and a communication function with a transponder, and its configuration and functions are already known. The call sign d, the altitude h (d) of the aircraft, and the direction of travel, which function as state information such as the failure of the wireless device and the occurrence of hijack, and the identification information of the aircraft, are obtained as response signals from the transponder. Further, the horizontal position (x, y) of the aircraft can be obtained as a response signal from a transponder in an aircraft equipped with a primary radar or GPS that constitutes a part of the radar system 2.
The horizontal position (x, y), traveling direction, altitude h (d), and call sign d of the aircraft function as display data extraction means D for each predetermined processing cycle via the interface 7 connected to the radar system 2. Input to the CPU 3.

  Here, an example of the logical configuration of the display mode storage table functioning as the display mode storage means A is shown in the conceptual diagram of FIG.

The display mode storage table 11 includes a plurality of altitude bands L (i) obtained by dividing the altitude of the aircraft without overlapping, and a drawing area J on the display B corresponding to each altitude band L (i). (I) It is the table which memorize | stored the setting conditions without duplication, In this embodiment, it is set as the structure which can select arbitrarily the division | segmentation number n of the altitude which an aircraft flies (however, n = 1-N). N / 4 in the embodiment).
For example, when a value of 3 is selected as the altitude division number n, the altitudes of the aircraft are divided into 3 without overlapping, and as shown in FIG. 6, the lowest altitude zone L (1) is obtained. The range of altitude h included is set in the range of 0 ≦ h <a4, and the display position of the drawing area J (1) on the display B corresponding to the altitude zone L (1) is the position (x4 ′, y4 ′) and its display scale is set to A4. In addition, the range of altitude h included in the second altitude zone L (2), which is an intermediate altitude, is set to a range of a4 ≦ h <a5, and drawing on the display B corresponding to the altitude zone L (2). The display position of the area J (2) is set to the position (x5 ′, y5 ′) in the display coordinate system, and the display scale is set to A5. The range of altitude h included in the highest third altitude zone L (3) is set to a range of a5 ≦ h <a6, and the drawing area J (3 on the display B corresponding to the altitude zone L (3) is set. ) Is set to the position (x6 ′, y6 ′) in the display coordinate system, and the display scale is set to A6.
A display example of the drawing areas J (1), J (2), and J (3) on the display B when the value 3 is selected as the altitude division number n is shown in the conceptual diagram of FIG.
An elliptical drawing area J (1) is an area for drawing an aircraft symbol having an altitude zone L (1), that is, an altitude h in a range of 0 ≦ h <a4, and the display position is a position in the display coordinate system. (X4 ′, y4 ′) and the display scale is defined by the set value A4. Similarly, an ellipse-shaped drawing area J (2) is an area for drawing an aircraft symbol having an altitude zone L (2), that is, an altitude h in the range of a4 ≦ h <a5, and the display position is the display coordinates. It is defined by the system position (x5 ′, y5 ′), and its display scale is defined by the set value A5. Similarly, an ellipse-shaped drawing area J (3) is an area for drawing an aircraft symbol having an altitude zone L (3), that is, an altitude h in the range of a5 ≦ h <a6, and the display position is the display coordinate system. The position (x6 ′, y6 ′) is defined, and the display scale is defined by the set value A6.
In the example of FIG. 7, each of the drawing areas J (1) to J (3) occupies a little less than 1/3 (1 / n) of the display area of the display B. The ratio of J (3) to the display B is not necessarily the same. For example, the display scale of the drawing area corresponding to the altitude zone where traffic is congested is changed to the display scale of the drawing area corresponding to another altitude band. It is also possible to set the drawing area to be relatively larger and to increase the vertical height of the drawing area on the display B.
Drawings corresponding to the values a4, a5, a6 and the altitude zones L (1), L (2), L (3) for specifying the range of the altitude zones L (1), L (2), L (3) Values (x4 ′, y4 ′), (x5 ′, y5 ′), (x6 ′, y6 ′) for specifying the display positions of the regions J (1), J (2), J (3) and the drawing region Values A4, A5, and A6 for specifying the display scales of J (1), J (2), and J (3) are drawn on the display B in the drawing areas J (1), J (2), and J (3). Are set as parameters using a part of the storage area of the non-volatile memory 5 or the hard disk 8, so that the display can be adjusted according to the operation status of the advanced information display device 1 and the like. The display mode in B can be freely adjusted.
Further, a display example on the display B when the value 4 is selected as the altitude division number n is shown in the conceptual diagram of FIG. 8, and a display example on the display B when the value 2 is selected as the altitude division number n. The illustration is omitted. Whether the value 2 is selected as the high division number n or the value 4 is selected, the operation principle is the same as in the case of FIG. 7 described above.

  In this embodiment, it is also possible to select the value 1 as the altitude division number n and draw the symbols of all aircraft in the single drawing area J on the display B regardless of the altitude zone. When the value 1 is selected as the division number n, display equivalent to that in the conventional example shown in FIG. 9 is performed.

  Next, referring to the flowcharts of FIGS. 3 to 5, the drawing area display control means C, the display data extraction means D, the drawing area selection means E, the actual data display control means F, the area transition determination means H, and the blinking control means. The processing operation of the CPU 3 of the advanced information display device 1 functioning as I will be specifically described.

  However, it is assumed that the value of the advanced division number n is previously set as a parameter in the nonvolatile memory 5 or the hard disk 8 by an input operation from the keyboard 10.

  When the radar system 2 and the altitude information display device 1 are activated, the CPU 3 functioning as the drawing area display control means C of the altitude information display device 1 first sets the altitude division number n from the nonvolatile memory 5 or the hard disk 8. The value is read (step S1), the value of the index i for counting the number of display in the drawing area J (i) is once initialized to 0 (step S2), and then the value of the index i is incremented by 1 again (step S3). .

Next, the CPU 3 functioning as the drawing area display control means C determines whether or not the current value of the index i is within the range of the altitude division number n (step S4), and the current value of the index i is the altitude division. If it is within the range of the number n, the display mode storage table 11 of FIG. 6 is referred to and stored in the (i, n) spot of the display mode storage table 11 based on the current value of the index i and the value of the division number n. The lower limit value and upper limit value of the altitude zone L (i) and the display position of the drawing area J (i) on the display B and the set value of the display scale are read (step S5), and based on these information The (i) -th drawing area J (i) is displayed on the display B, and the upper limit value of the altitude zone L (i) is displayed in a rectangular frame at the upper right of the drawing area J (i) (step S6). ).
Therefore, assuming that the current value of the index i is 1 under the situation where 3 is set as the value of the division number n, it is stored in the (1, 3) spot of the display mode storage table 11 of FIG. The lower limit value 0 and upper limit value a4 of the altitude zone L (1) and the display position (x4 ′, y4 ′) of the drawing area J (1) on the display B and its display scale A4 are read, and FIG. A display area J (1) as shown is displayed on the display B, and an upper limit value a4 [for example, 3000 (feet)] of the altitude zone L (1) is enclosed in a rectangular frame at the upper right of the drawing area J (1). Will be displayed.
However, at this stage, the aircraft symbol indicated by the wedge-shaped figure in FIG. 7 is still not displayed.

Next, the CPU 3 functioning as the drawing area display control means C increments the value of the index i by 1 (step S3), and whether or not the current value of the index i is within the range of the number n of altitude divisions as described above. (Step S4), and if the current value of the index i is within the range of the high division number n, the display mode storage table 11 of FIG. 6 is referred to, and the updated current value of the index i and the division number Based on the value of n, the lower limit value and upper limit value of the altitude zone L (i) stored in the (i, n) spot of the display mode storage table 11 and the display position of the drawing area J (i) on the display B And the display scale setting value are read (step S5), and the (i) -th drawing area J (i) is displayed on the display B based on the information, and the upper right of the drawing area J (i). A rectangular frame with the upper limit of the altitude zone L (i) It is displayed in only (step S6).
Therefore, assuming that the current value of the index i is 2 under the condition that 3 is set as the value of the division number n, it is stored in the (2, 3) spot of the display mode storage table 11 of FIG. The lower limit value a4 and upper limit value a5 of the altitude zone L (2), the display position (x5 ′, y5 ′) of the drawing area J (2) on the display B, and the display scale A5 thereof are read in FIG. A display area J (2) as shown is displayed on the display B, and an upper limit value a5 [for example, 6000 (feet)] of the altitude zone L (2) is enclosed in a rectangular frame at the upper right of the drawing area J (2). Will be displayed.
However, at this stage, the aircraft symbol indicated by the wedge-shaped figure in FIG. 7 is still not displayed.

  Thereafter, the CPU 3 functioning as the drawing area display control means C performs steps S3 to S3 in the same manner as described above while incrementing the value of the index i until the current value of the index i exceeds the range of the altitude division number n. The process of S6 is repeatedly executed, and the drawing regions J (1) to J (n) corresponding to the division number n are all displayed on the display B without overlapping.

As described above, FIG. 7 shows a display example of the drawing areas J (1) to J (3) when n = 3, and FIG. 8 shows the drawing areas J (1) to J (N) when n = 4. It is a display example of (4).
When n = 1 is set, only one drawing area J (1) is displayed, so the display state is the same as that of the conventional example shown in FIG.

  In this way, when all the n drawing regions J (1) to J (n) corresponding to the high division number n are divided and displayed on the display B, the display data extracting means D functions. The CPU 3 receives data such as aircraft call sign d, horizontal position (x, y), altitude h (d), traveling direction, state information, etc., input from the radar system 2 via the interface 7 at predetermined intervals. The reading process is started (step S7).

  Each time the reading of data such as call sign d, horizontal position (x, y), altitude h (d), traveling direction, state information, etc. for one aircraft is completed, it functions as a drawing area selection means E. CPU 3 that initializes the value of search index i for specifying altitude altitude zone L (i) including altitude h (d) at which the aircraft flies to 0 once (step S8), and the value of index i Is again incremented by 1 (step S9).

  Next, the CPU 3 functioning as the drawing area selection unit E refers to the display mode storage table 11 of FIG. 6 and, based on the current value of the index i and the value of the division number n, (i, n ) The lower limit value and the upper limit value of the altitude zone L (i) stored in the spot are read (step S10), and the aircraft having the altitude h (d) of the aircraft read in step S7 of the processing cycle, that is, the call sign d It is determined whether or not the altitude h (d) is between the lower limit value and the upper limit value of the altitude zone L (i) stored in the (i, n) spot of the display mode storage table 11 (step S11).

If the determination result in step S11 is false, the altitude h (d) of the aircraft read in the process of step S7 in the processing cycle is stored in the (i, n) spot of the display mode storage table 11. It means that it is larger than the upper limit value of the band L (i).
Therefore, in this case, the CPU 3 functioning as the drawing area selecting means E determines whether or not the current value of the index i is within the range of the high division number n, that is, the comparison target in the process of step S11. It is determined whether or not an altitude zone higher than the altitude zone L (i) is stored in the nth column of the display mode storage table 11 regardless of the row (step S12).

  If the determination result in step S12 is true, an altitude zone higher than the altitude zone L (i) that was compared in the processing of step S11 is displayed in the nth column of the display mode storage table 11. The CPU 3 functioning as the drawing area selection means E again increments the value of the index i by 1 (step S9), and is updated with reference to the display mode storage table 11 of FIG. Based on the current value of the index i and the value of the division number n, the lower limit value and the upper limit value of the altitude zone L (i) stored in the (i, n) spot of the display mode storage table 11, that is, read in the previous processing. The lower limit value and upper limit value of the altitude zone L (i) that is one step higher than the altitude zone L (i) are read (step S10), and the altitude h (d) of the aircraft read in step S7 of the processing cycle is read. ) Read anew (I, n) of the display mode storage table 11 or the determines whether there between lower and upper limits of the stored altitude band L (i) to a spot (step S11).

  When the determination result in step S11 becomes false again, the CPU 3 functioning as the drawing area selection unit E repeatedly executes the same process as described above while incrementing the value of the index i, The lower limit value and the upper limit value of the altitude zone L (i) are sequentially read, and the altitude zone L (i) including the altitude h (d) of the aircraft read in step S7 in the processing cycle is processed in step S11. To identify.

If the determination result in step S11 is finally true and the altitude zone L (i) including the altitude h (d) of the aircraft read in the processing in step S7 in the processing cycle is specified, the actual data display Based on the current value of the index i at this time, the CPU 3 functioning as the control means F indicates the drawing area J (i) on the display B corresponding to the altitude zone L (i) of the aircraft identified by the call sign d. The symbol M (d) is selected as a drawing area to be displayed, the setting conditions of the drawing area J (i), that is, the display position of the monitor coordinate system on the display B, the lower limit value and the upper limit value of the altitude zone L (i), Based on the display scale, the aircraft symbol M (d) and its traveling direction are displayed at the corresponding positions of the drawing area J (i) on the display B, and the call sign d and altitude h ( d) Information The display in the lead lines from the symbol M (d) (step S14).
Therefore, assuming that 3 is set as the value of the division number n, and information of an aircraft with a call sign of SKY456 and an altitude of 2000 (feet) is read from the radar system 2 in the process of step S7. When the current value of the index i is 1, the lower limit value 0 and the upper limit value a4 [eg, 3000 (feet)] of the altitude zone L (1) stored in the (1, 3) spot of the display mode storage table 11 are read. It is. Since the altitude 2000 (feet) of the aircraft having the call sign SKY456 is in the altitude zone L (1), that is, in the range of 0 to a4 [for example, 3000 (feet)], 1 is specified as the value of the index i at this stage. The As a result, as shown in the example of FIG. 7, the drawing area J (1) on the display B corresponding to the altitude zone L (1) is selected, and the actual position (x, y) of the aircraft having the call sign SKY456 The symbol M (SKY456) of the aircraft is displayed on the drawing area J (1), and the traveling direction is represented by the direction of the wedge of the symbol M (SKY456). The sign SKY456 and its altitude 2000 (feet) are displayed as a leader line from the symbol M (SKY456). Since coordinate conversion processing for symbol display is well known, it will not be described here. In the example of FIG. 7, since the minimum unit of altitude displayed with the symbol is 100 (feet), 2000 (feet) is displayed as 20 in the display in the drawing area.
Also, assuming that 3 is set as the value of the division number n, and information on an aircraft with a call sign of AIR987 and an altitude of 5000 (feet) is read from the radar system 2 in the process of step S7. When the current value of the index i is 2, the lower limit value a4 [e.g., 3000 (feet)] of the altitude zone L (2) stored in the (2, 3) spot of the display mode storage table 11 and the upper limit value a5 [ For example, 6000 (feet)] is read. Since the altitude of 5000 (feet) of the aircraft having the call sign AIR987 is in the range of altitude band L (2), that is, in the range of a4 (eg, 3000 (feet)) to a5 (eg, 6000 (feet)), 2 will be specified. As a result, as shown in the example of FIG. 7, the drawing area J (2) on the display B corresponding to the altitude zone L (2) is selected, and the actual position (x, y) of the aircraft having the call sign AIR987. Corresponding to the aircraft symbol M (AIR987) is displayed on the drawing area J (2), and at the same time, the traveling direction is represented by the direction of the wedge of the symbol M (AIR987) and the call of the aircraft The sign AIR987 and its altitude 5000 (feet) are displayed as a leader line from the symbol M (AIR987). Similarly to the above, since the minimum unit of altitude displayed with the symbol is 100 (feet), 5000 (feet) is displayed as 50 in the display in the drawing area.

However, if the altitude band L (i) including the altitude h (d) is not detected even if the determination result in step S12 is false, the altitude h (d) of the aircraft having the call sign d is the maximum defined. Since it means that the altitude is deviated, the CPU 3 displays the call sign d and the error message of the aircraft on the display B, and specifies the altitude zone L (i) including the altitude h (d). The process is interrupted (step S13), the process returns to the process of step S7, and the call sign d, horizontal position (x, y), altitude h (d), traveling direction, state information, etc. of other aircraft are read. Prepare for.
Of course, if the maximum value (substantially infinite) in the altitude information display device 1 is set as the upper limit of the altitude zone L (n), that is, the highest altitude zone, the altitude h (d) of the aircraft is already defined There is no inconvenience of deviating from the altitude.

  Thus, after the display of the symbol M (d) corresponding to the aircraft read in step S7 of the processing cycle, its traveling direction, the call sign d, and the altitude h (d), the actual data display control means F is used. The functioning CPU 3 determines whether the data read in the process of step S7 of the processing cycle includes important information such as predetermined state information such as a failure of the wireless device or occurrence of hijacking. (Step S15) Display of the symbol M (d) of the aircraft displayed in the process of Step S14, that is, the aircraft having the call sign d, only when important information such as the failure of the wireless device or the occurrence of hijacking is detected The color is changed to a preset highlight color (step S16).

  Next, the CPU 3 of the altitude information display device 1 has the drawing area storage register R (d) functioning as the drawing area storage means G corresponding to the aircraft call sign d read in step S7 of the processing cycle in the RAM 6. It is determined whether it has already been defined (step S17).

  If the determination result in step S17 is false, that is, the drawing area storage register R (d) functioning as the drawing area storage means G corresponding to the call sign d is not yet defined in the RAM 6 at this time. If it becomes clear, it means that the aircraft with the call sign d read in step S7 of the processing cycle has entered the search range of the radar system 2 for the first time at that time, so the altitude information display device 1 The CPU 3 newly defines a storage area functioning as the drawing area storage register R (d) corresponding to the aircraft of the call sign d in the RAM 6 (step S18), and stores the drawing area storage register R (d) in the step S11. The current value of the index i identified in the processing of step 1, that is, the altitude zone L (i) where the aircraft having the call sign d is currently flying And it stores the value for specifying a drawing area J (i) corresponding to it (step S19).

  Also, it becomes clear that the determination result in step S17 is true and the drawing area storage register R (d) functioning as the drawing area storage means G corresponding to the aircraft with the call sign d is already defined in the RAM 6. If this is the case, it means that the aircraft corresponding to the call sign d read in step S7 of the processing cycle has been captured by the radar system 2 before that time. The CPU 3 that reads the current value of the drawing area storage register R (d) corresponding to the call sign d and whether or not the value matches the current value of the index i specified in the process of step S11, that is, Change to the altitude zone L (i) or drawing area J (i) where the aircraft corresponding to the call sign d read in step S7 of the processing cycle flies. It will determine whether has occurred (step S20).

  If the determination result in step S20 is true and a match between the current value of the drawing area storage register R (d) and the current value of the index i specified in the process of step S11 is confirmed, This means that there is no change in the altitude zone L (i) or drawing area J (i) in which the aircraft with the call sign d read in the process of step S7 flies, so that the CPU 3 of the altitude information display device 1 further calls It is determined whether or not the blinking flag S (d) corresponding to the sign d is set (step S25).

If the determination result in step S25 is false and it is confirmed that the blinking flag S (d) is not set, the aircraft with the call sign d read in step S7 of the processing cycle flies. That there is no change in the altitude zone L (i) or the drawing area J (i), and that the aircraft symbol M (d) of the call sign d read in step S7 of the processing cycle is not in the blinking state. means.
Therefore, in this case, the CPU 3 of the altitude information display device 1 determines whether or not the aircraft with the call sign d is out of the search range of the radar system 2 (step S30). Returning to the process of step S7, the next aircraft call sign d, horizontal position (x, y), altitude h (d), traveling direction, state information, etc. are prepared for reading.

On the other hand, when the determination result in step S20 is false and a mismatch between the current value of the drawing area storage register R (d) and the current value of the index i specified in the process of step S11 is confirmed, the process is performed. This means that the altitude zone L (i) and the drawing area J (i) in which the aircraft with the call sign d read in the processing in step S7 of the flight flies have changed, so the CPU 3 functioning as the blinking control means I However, blinking display of the aircraft symbol M (d) read in the process of step S7 of the process cycle is started (step S21).
Then, the CPU 3 of the altitude information display device 1 stores the index i in the drawing area storage register R (d) functioning as the drawing area storage means G corresponding to the call sign d of the aircraft read in step S7 of the processing cycle. The current value, that is, the value for specifying the altitude zone L (i) and the drawing area J (i) of the aircraft after the change has occurred is updated and stored (step S22), and further corresponds to the call sign d. By setting the blinking flag S (d), it is memorized that the blinking display of the symbol M (d) corresponding to the aircraft with the call sign d is started (step S23). The value of the counter T (d) for measuring the duration of blinking display of the symbol M (d) is initialized to 0 (step S24).

In this way, as a result of setting the blinking flag S (d) corresponding to the call sign d of the aircraft in which the altitude zone L (i) or the drawing area J (i) has changed, the next cycle and thereafter If the data of the aircraft having the same call sign (d), that is, the data of the same aircraft is read from the radar system 2 in the processing of step S7 in the processing cycle, the determination result of step S17 is necessarily true (drawing area storage register R ( d) has already been generated), the determination process of step S20 is executed in the same manner as described above. At this time, the altitude zone L (i) or the drawing area J (i) where the aircraft with the call sign d flies is displayed. Since the change has just occurred and the altitude zone L (i) and the drawing area J (i) do not immediately change again, the determination result in step S20 is also true.
As already described, since the blinking flag S (d) corresponding to the aircraft with the call sign d is set at this time, the determination result in step S25 is also true.

  Accordingly, the CPU 3 functioning as the blinking control means I increments the value of the counter T (d) that measures the blinking duration of the symbol M (d) corresponding to the aircraft with the call sign d by 1 (step S26). Then, it is determined whether or not the current value of the counter T (d) is within the range of the count set value k corresponding to the set time for blinking display (step S27).

  Here, when the determination result of step S27 is true and it is clear that the current value of the counter T (d) is within the range of the count setting value k corresponding to the setting time of blinking display, This means that the duration of the blinking display relating to the symbol M (d) does not reach the set value, so that the CPU 3 functioning as the blinking control means I keeps the aircraft symbol M (d corresponding to the call sign d as it is. ) Continue blinking display.

  On the other hand, if the determination result in step S27 is false and it is clear that the current value of the counter T (d) has reached the count setting value k corresponding to the setting time of blinking display, The blinking display of the symbol M (d) was continuously performed for the set time, that is, the aircraft having the call sign d entered the new altitude zone L (i) or the drawing area J (i). The CPU 3 functioning as the blinking control means I stops the blinking display of the aircraft symbol M (d) corresponding to the call sign d (step S28). The value of the blinking flag S (d) corresponding to the call sign d is reset (step S29).

  As a result of resetting the value of the blinking flag S (d) in this manner, the data of the aircraft having the same call sign (d) in the processing of step S7 in the processing cycle subsequent to the next cycle, that is, the data of the same aircraft, is radar. When read from the system 2, the determination result in step S17 is necessarily true (since the drawing area storage register R (d) has already been generated), and the determination processing in steps S20 and S25 is executed in the same manner as described above. However, since the value of the blinking flag S (d) corresponding to the call sign d has already been reset at this time, the determination result in step S25 is false, and the aircraft symbol M (d corresponding to the call sign d ) Will continue to be displayed in the normal lighting state.

  The drawing area storage register R (d) functioning as the drawing area storage means G for each call sign d, the blinking flag S (d) for each call sign d, and the counter T (d) for each call sign d are all radar systems. It is generated every time an aircraft having a new call sign d enters the search range of 2, but it is confirmed by the determination process in step S30 that the aircraft of call sign d has ranged out of the search range of the radar system 2. Each time the drawing area storage register R (d), blinking flag S (d), and counter T (d) corresponding to the call sign d are automatically deleted (step S31), the RAM 6 that has been released is thereby released. The drawing area storage register R (d), blinking flag S (d) for the aircraft with the newly detected call sign d, the flag, Since it is possible to re-use as a pointer T (d), there is no worry caused a shortage in storage capacity of RAM6.

As described above, the call sign d, the horizontal position (x, y), the altitude h (d), and the progress of the aircraft from the radar system 2 through the interface 7 in the process of step S7 repeated at predetermined intervals. Each time data such as direction and state information is read by the CPU 3 functioning as the display data extraction means D, the processing of step S8 to step S12 and step S14 to step S31 is repeatedly executed. As a result, for each call sign d of each aircraft. The altitude zone L (i) including the flight altitude of the aircraft is specified in real time according to the display mode storage table 11 of FIG. 6, and the coordinate system of the drawing area J (i) on the display B corresponding to the altitude zone L (i) The change of the actual position (x, y) and the traveling direction of the aircraft at the position corresponding to the actual position (x, y) of the aircraft above Aircraft symbol M in accordance with a change (d) are sequentially updated to dynamically and continuously displayed.
Further, the traveling direction of the aircraft is displayed according to the direction of the wedge of each symbol M (d), and the call sign d and the altitude h (d) of the aircraft are indicated by characters and numerical values by a lead line from the symbol M (d). Will be displayed.

FIG. 7 shows a display example of several aircraft symbols displayed in the three drawing areas J (1), J (2), J (3) when the value 3 is selected as the altitude division number n. Shown in
As shown in FIG. 7, the altitude at which the aircraft flies is divided into three vertically on the display B without overlapping according to the value of the division number n, and the lowest first altitude band L (1), that is, 0 ≦ h <A4 [e.g., 3000 (feet)] altitude in the range of call sign SKY456 is displayed in the drawing area J (1), and the second altitude zone L (2), that is, a4 [ For example, aircraft of call sign AIR987 and call sign SKY123 flying at altitudes in the range of 3000 (feet) ≦ h <a5 (eg, 6000 (feet)) are displayed in the drawing area J (2), and the highest third altitude is displayed. Callsign AIR769 and callsign SKY321 aircraft flying at altitude in the range of band L (3), that is, a5 [for example, 6000 (feet)] ≦ h <a6 Since it is displayed in the area J (3), the altitudes of a large number of aircrafts can be set for each altitude zone due to the difference in the drawing area on the display B without changing the display color and line type used for drawing the aircraft symbols. Intuitive and easy grasping, and an aircraft flying in a specific altitude zone [the altitude zone L (i) targeted for attention among the altitude zones L (1), L (2), L (3)] Can be accurately grasped.

  In this embodiment, in particular, the call sign and altitude information of the aircraft are displayed with characters and numerical values by the lead lines from the symbols, so that the altitude of each aircraft can be known in detail as necessary. it can.

  Moreover, when the aircraft altitude shifts to another altitude zone, the aircraft symbols that have changed in the altitude zone are displayed blinking for the set time, so the aircraft drawing area is divided into multiple areas. In spite of being displayed in a single color, the destination can be easily identified and tracked without losing sight of the aircraft that has moved to another altitude zone.

  In this way, since the altitude zone in which the aircraft flies can be identified only by a single color display, various colors are not flooded on the display B, and important information other than the flight altitude, for example, wireless When it becomes necessary to display status information such as device failure or hijack occurrence, it is possible to display these status information more prominently by the difference in the display color and line type. .

  When the value 4 is selected as the division number n of the altitude and four drawing areas J (1), J (2), J (3), J (4) are displayed (see FIG. 8), and the altitude division When the value 2 is selected as the number n and the two drawing areas J (1) and J (2) are displayed, the qualitative actions and effects are the same as described above.

  A part or all of the embodiment disclosed above can be appropriately expressed by the description shown in the following supplementary notes, but the form for carrying out the invention and the technical idea of the invention are not limited to these. Absent.

[Appendix 1]
Based on the aircraft position, traveling direction, altitude, and identification information obtained by the radar system, the symbol, altitude, and identification information indicating the aircraft position, traveling direction, and the identification information are sequentially updated in the drawing area set on the display. An altitude information display method for displaying,
Divide the aircraft's flying altitude into multiple altitude zones without overlapping, and divide and display the drawing area corresponding to each altitude zone on the display without overlapping,
Based on the altitude of the aircraft acquired by the radar system, a drawing area corresponding to the altitude zone in which the aircraft flies is selected for each aircraft, and a symbol and altitude indicating the position and traveling direction of the aircraft in the selected drawing area, and An altitude information display method characterized by displaying identification information.

[Appendix 2]
The altitude information display method according to appendix 1, wherein when the altitude zone where the aircraft flies changes, symbols representing the position and traveling direction of the aircraft are blinked.

[Appendix 3]
Based on the aircraft position, traveling direction, altitude, and identification information obtained by the radar system, the symbol, altitude, and identification information indicating the aircraft position, traveling direction, and the identification information are sequentially updated in the drawing area set on the display. An altitude information display device for displaying,
A display mode storage means for storing a plurality of altitude zones obtained by dividing the altitude of the aircraft without overlapping and the drawing area setting conditions corresponding to each altitude zone without overlapping,
Drawing area display control means for dividing and displaying on the display without overlapping the drawing area for each altitude zone based on the setting condition stored in the display mode storage means;
A display data extracting means for extracting the position and traveling direction and altitude of the aircraft and the identification information acquired by the radar system;
A drawing area selecting means for searching the display mode storage means based on the altitude of the aircraft acquired by the display data extracting means and selecting a drawing area on the display corresponding to the altitude zone including the altitude of the aircraft;
Real data display control means for displaying a symbol representing the position and traveling direction of the aircraft, altitude and identification information in the selected drawing area based on the setting conditions of the drawing area selected by the drawing area selection means An altitude information display device characterized by that.

[Appendix 4]
A drawing area storage means for sequentially updating and storing the drawing area selected by the drawing area selection means for each identification information;
A region transition determination unit that determines, for each identification information, whether or not a change has occurred in the drawing region stored in the drawing region selection unit;
And a blinking control means for blinking a symbol corresponding to the changed identification information of the drawing area for a preset time when the area transition determining means detects a change in the drawing area. The altitude information display device according to appendix 3.

[Appendix 5]
The display data extraction means further has a state information extraction function for extracting aircraft state information acquired by a radar system,
The actual data display control means has a display color changing function for changing a symbol corresponding to the identification information of the aircraft to a preset display color when the display data extracting means detects predetermined state information. The altitude information display device according to any one of Supplementary Note 3 and Supplementary Note 4 characterized by comprising:

  The present invention can be applied to an apparatus that displays altitude information such as aircraft position and weather information.

DESCRIPTION OF SYMBOLS 1 Altitude information display apparatus 2 Radar system 3 Microprocessor 4 Read-only memory 5 Non-volatile memory 6 Random access memory 7 Interface 8 Hard disk 9 Input / output circuit 10 Keyboard 11 Display mode storage table A Display mode storage means B Display C Drawing area display control means D Display data extraction means E Drawing area selection means F Actual data display control means G Drawing area storage means H Area transition determination means I Blinking control means J Drawing areas J1, J2, J3, J4 Drawing area J ( i) Drawing area L1, L2, L3, L4 Altitude band L (i) Altitude band M1-M6 Symbol M (d) Symbol d1-d6 Call sign (identification information)
d Call signs h1 to h6 Altitude h (d) Altitude (x, y) Horizontal position of the aircraft

Claims (5)

Based on the aircraft position, traveling direction, altitude, and identification information obtained by the radar system, the symbol, altitude, and identification information indicating the aircraft position, traveling direction, and the identification information are sequentially updated in the drawing area set on the display. An altitude information display method for displaying,
Divide the aircraft's flying altitude into multiple altitude zones without overlapping, and divide and display the drawing area corresponding to each altitude zone on the display without overlapping,
Based on the altitude of the aircraft acquired by the radar system, a drawing area corresponding to the altitude zone in which the aircraft flies is selected for each aircraft, and a symbol and altitude indicating the position and traveling direction of the aircraft in the selected drawing area, and An altitude information display method characterized by displaying identification information.   2. The altitude information display method according to claim 1, wherein when the altitude zone in which the aircraft flies changes, a symbol representing the position and traveling direction of the aircraft is blinked. Based on the aircraft position, traveling direction, altitude, and identification information obtained by the radar system, the symbol, altitude, and identification information indicating the aircraft position, traveling direction, and the identification information are sequentially updated in the drawing area set on the display. An altitude information display device for displaying,
A display mode storage means for storing a plurality of altitude zones obtained by dividing the altitude of the aircraft without overlapping and the drawing area setting conditions corresponding to each altitude zone without overlapping,
Drawing area display control means for dividing and displaying on the display without overlapping the drawing area for each altitude zone based on the setting condition stored in the display mode storage means;
A display data extracting means for extracting the position and traveling direction and altitude of the aircraft and the identification information acquired by the radar system;
A drawing area selecting means for searching the display mode storage means based on the altitude of the aircraft acquired by the display data extracting means and selecting a drawing area on the display corresponding to the altitude zone including the altitude of the aircraft;
Real data display control means for displaying a symbol representing the position and traveling direction of the aircraft, altitude and identification information in the selected drawing area based on the setting conditions of the drawing area selected by the drawing area selection means An altitude information display device characterized by that. A drawing area storage means for sequentially updating and storing the drawing area selected by the drawing area selection means for each identification information;
A region transition determination unit that determines, for each identification information, whether or not a change has occurred in the drawing region stored in the drawing region selection unit;
And a blinking control means for blinking a symbol corresponding to the changed identification information of the drawing area for a preset time when the area transition determining means detects a change in the drawing area. The altitude information display device according to claim 3. The display data extraction means further has a state information extraction function for extracting aircraft state information acquired by a radar system,
The actual data display control means has a display color changing function for changing a symbol corresponding to the identification information of the aircraft to a preset display color when the display data extracting means detects predetermined state information. The altitude information display device according to claim 3, wherein the altitude information display device is provided.

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