JPH09301294A - Runway centerline visual aid system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To safely guide an aircraft for landing without setting a protruding matter on a runway by linearly emitting a laser beam generated from a laser generating device to the center part of the runway, and forming a pseudo centerline in the center part of the runway. SOLUTION: Laser generating devices for forming a runway centerline of surface beam are set on one side or both sides of a runway 2 at substantially equal intervals. Since a centerline setting device 8 forms a pseudo runway centerline 3 on the runway 2 on the basis of the drive control from a central monitoring computer 4, a pilot visually confirms it and corrects the track when an aircraft 1 is shifted from the pseudo runway centerline 3. Thus, a centerline can be formed on the runway without an obstruction, and the pilot can safely guide the aircraft to the runway center.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a runway centerline visual support system that enables a pilot to visually recognize a runway centerline from a cockpit portion in an aircraft.

[0002]

2. Description of the Related Art Military aircraft, unlike ordinary commercial aircraft, dive and have various accessories attached to the outside of the aircraft, so that a projection device or the like indicating the runway center line is installed on the runway. Doing so is not preferable.

Therefore, it is general that civil aircraft and military aircraft use separate airports for takeoff and landing. However, due to the narrowness of airports and regional factors, civil aircraft and military aircraft are used. The aircraft may have to use the same airport. In such a case, no runway center line is set on the runway of the airport for the above reasons.

[0004]

Therefore, at the airport shared by civilian aircraft and military aircraft as described above, when a civilian aircraft or a military aircraft lands at the airport, on a foggy day, on a snowy day, Or, on a day with poor ground visibility, such as a day with strong wind, it becomes very difficult for the pilot to land on the center of the runway while looking out from the cockpit.
When the aircraft lands, it becomes unstable and often deviates from the runway.

Therefore, most pilots feel that it is more difficult to operate when landing at an airport where the centerline is not installed on the runway, compared to the airport where the centerline is installed on the runway. It appeals the necessity of the road center line. At present, I am trying to land on the center of the runway using everything that the pilot can see, but at the end I have to rely on my intuition and give the pilot a great deal of anxiety. It is the actual situation.

Therefore, in this kind of airport, it is required to set the runway center line on the runway within a range where the airplane is safe and does not interfere with the military aircraft. The invention according to any one of claims 1 to 3 forms a runway centerline in a pseudo manner without installing protrusions on the runway, and makes it possible to safely guide the landing of the aircraft. To provide a system.

According to a fourth aspect of the present invention, a component is installed which does not hinder the landing of the aircraft, receives a laser beam, and creates a visible state representing the runway center line from the component, thereby making the aircraft safe. It is intended to provide a runway centerline visual support system that enables landing guidance to a vehicle.

According to a fifth aspect of the present invention, a visualization block is embedded in the surface of the center of the runway, receives a laser beam, and creates a visible state that represents the runway center line from the visualization block to safely land the aircraft. (EN) Provided is a runway centerline visual support system that can be guided.

According to a sixth aspect of the present invention, there is provided a runway centerline visual assistance system for imaging a runway line on an aircraft itself to create a runway centerline, and enabling the aircraft to safely land and guide the aircraft accordingly. To provide.

[0010]

In order to solve the above-mentioned problems, the invention according to claim 1 is to install a laser generator on one side or both sides of a runway at predetermined intervals and generate from these laser generators. This is a runway centerline visual assistance system that linearly irradiates the center part of the runway with the generated laser light to form a pseudo centerline in the center part of the runway.

According to the invention corresponding to claim 1, by taking the above-mentioned means, the laser beam generated from the laser generator installed on one side or both sides of the runway at predetermined intervals is used. Since it irradiates the center of the line with a line and forms a pseudo centerline, the runway centerline can be set without installing protrusions on the runway, and the pilot can safely check the centerline and secure the aircraft. Can be guided and landed.

According to the second aspect of the present invention, if the water spray device installed on one side or both sides of the runway at predetermined intervals is sprayed in the sky, the positions of both sides of the runway can be easily determined. Also, if water is sprayed from the water spray device so that it reaches the center of the runway, the landing line becomes the runway center line, so the pilot can safely check the aircraft while checking the spray water condition. Can be guided to and landed.

The invention corresponding to claim 3 is to install a meteorological information acquisition means for acquiring meteorological information including at least illuminance and one or both sides of the runway alternately and at predetermined intervals to generate a laser beam. A laser generator for spraying and a water spray device for spraying water, and when the illuminance is at least a predetermined value among the weather information acquired by the weather information acquisition means, only the water spray device is driven to drive the center of the runway. Water is sprayed to land on the part, and when the illuminance is below a predetermined value, the laser generator is driven to linearly irradiate the central part of the runway with laser light, and if necessary. The water spraying device is also driven at the same time, and the spraying water landing on the central part of the runway from this water spraying device is irradiated with laser light to be visualized, and a control is performed to form a center line in the central part of the runway. Drive control A runway center line vision assistance system including a stage.

By taking measures such as the invention according to claim 3, it is difficult to visualize the runway center line by laser light when the illuminance is above a predetermined value, so that only the water spray device is driven. A center line is formed in the center of the runway by spraying water so that it will land on the center of the runway. On the other hand, when the illuminance is less than or equal to a predetermined value, or when the laser generator is driven to linearly irradiate the central portion of the runway with laser light, a runway centerline can be formed on the runway by the laser light. To make the runway center line clearer, drive the water spray device at the same time as the laser generator and spray the water so that it lands on the center. A road center line can be formed.

When the weather information is, for example, rain, fog, snow or night, the water spray device is not driven. This is because it plays the same role as spray water. The invention corresponding to claim 4 is a laser generator installed on one side or both sides of a runway at predetermined intervals, and a laser beam from the laser generator installed at a center of the runway at predetermined intervals. Runway centerline visual support including an optical element that reflects upward and a transparent member that is installed so as to cover the upper part of the optical element and diffuses and reflects the laser light that is incident through the optical element System.

In the invention corresponding to claim 4, the laser light generated from the laser generator is reflected by the optical element and is irradiated upward by taking the above-mentioned means. At this time, the laser light is transparent. Since the member receives the laser light and diffusely reflects it, a linear visualization state is obtained from the transparent member, so that the runway centerline can be formed on the runway.

In this system, an optical element is installed on the runway, but if the transparent member for covering the optical element has a height and width that do not hinder the landing of the aircraft, the aircraft is It is possible to guide landing safely.

Next, the invention according to claim 5 is the laser generator installed on one side, both sides of the runway or at a predetermined interval on the ground, and at a predetermined interval in the ground at the center of the runway. Is a runway centerline visual assistance system that includes a visualization block body that is embedded in the above and diffuses and reflects the laser light from the laser generator.

According to the invention corresponding to claim 5, when the laser generators are installed on one side or both sides of the runway by taking the above-mentioned means, the laser generators are installed in the central part of the runway. By irradiating the visualization block to be installed with laser light, the visualization block can be visualized to draw a runway centerline on the runway, and when the laser generator is installed in the ground of the runway, this By irradiating the visualization block with laser light from the laser generator through the laser optical path in the ground, the runway centerline can be drawn on the runway by visualization of the visualization block.

Further, the invention according to claim 6 is an imaging camera which is embedded in or externally attached to the forehead of an aircraft that does not interfere with the landing of the aircraft, and which captures an image of a runway in front of the aircraft, and an imaging camera. Angle calculation means for calculating the angle of both sides of the runway from the captured image data,
The runway centerline visual support system is provided with means for creating a centerline by using the angles of both side lines calculated by the angle calculating means, and setting and displaying a centerline mark on the centerline.

According to the invention corresponding to claim 6, by taking the above-mentioned means, after the runway in front of the aircraft is imaged by the imaging camera mounted on the aircraft, the imaging data is taken in and the gliding is performed. The angles of both sides of the runway are calculated, the centerlines of both sides of the runway are created based on a predetermined calculation formula, and the centerline marks are displayed along the created centerlines for display. Can land on the runway according to the centerline mark, and the aircraft can land safely.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) FIG. 1 is a diagram showing a basic configuration of a runway centerline visual support system according to the present invention. This support system consists of a runway 2 on which an aircraft 1 lands.
A pseudo runway center line 3 is formed on the upper side, and a pilot in the cockpit can land safely while visually observing the pseudo runway center line 3.

Specifically, this support system transmits an illuminance meter 4 for measuring the brightness of the surroundings and electromagnetic waves such as microwaves, and rain, fog, or snow from reflected waves from a target such as rain. A weather radar 5 for detecting weather conditions such as the above, an anemometer 6 for measuring the speed and direction of the wind, and central monitoring as drive control means for executing predetermined program processing using outputs of these measuring devices 4-6. A computer 7 and a center line setting device 8 for setting the pseudo runway center line 3 on the runway 2 based on the processing result of the central monitoring computer 4 are provided.

The illuminance meter 4 measures the ambient brightness,
For example, when a laser emitting device is used as the center line setting device 8, it is used to determine whether or not to use the laser emitting device. The weather radar 5 uses the laser emitting device in the case of rain, fog, snow, night, etc., and forms the pseudo runway center line 3 by using other means without using the laser emitting device in other cases. It is used to judge whether to do something. The anemometer 6 is used to set the runway center line, for example, so that the runway center line faces a little toward the windward direction from the safety of the aircraft when the wind speed is higher than a predetermined level.

The acquisition of the weather information is not limited to the illuminance meter 4, the weather radar 5, the anemometer 6, etc., but other weather information measuring devices may be used as needed, and the local information service can be provided. It is also possible to use.

FIG. 2 is a diagram for explaining a pilot work procedure when the above system is used. This system is based on drive control from the central monitoring computer 4,
The center line setting device 8 allows the runway 2 to be operated by various means.
Since the pseudo runway centerline 3 is formed above, the pilot in the cockpit visually confirms the pseudo runway centerline 3 (ST1), and determines whether the aircraft 1 deviates from the pseudo runway centerline 3 or not. (ST2) If it is deviated, the trajectory is corrected on the pseudo runway center line 3 (ST3).

Next, FIGS. 3 to 5 are views showing a concrete embodiment of the center line setting device 8. FIG. 3 shows an installation example of each constituent device that constitutes the centerline setting device 8, FIG. 4 shows a structure of a laser generator which is one of the constituent devices, and FIG. 5 shows one of the constituent devices. It is a figure which shows the structure of a water spray apparatus.

The centerline setting device 8 generates a laser beam for forming a runway centerline of a surface beam having a predetermined width and having a predetermined width on one side or both sides of the runway 2 as shown in FIG. The device 11 and the water spray device 12 such as a sprinkler are installed alternately and at substantially equal intervals.

FIG. 4 is a diagram showing an example of the configuration of the laser generator 11. 1A is a schematic external view, FIG. 1B is an array diagram of an optical system that irradiates a laser beam in a predetermined direction, and FIG. 1C is a view showing a runway center line drawn by the laser generator 11. Is. This laser generator 11
Is a laser light source 111 that generates laser light, a fixed lower mirror 112 that directly receives the laser light emitted from the laser light source 111, and the laser light that is reflected by the lower mirror 112 and is reflected in a predetermined direction. Top mirror 1
13 and a semi-cylindrical lens (cylindrical lens) 114 that converts the laser light from the upper mirror 113 into a linear surface beam having a predetermined width.
13 and the semi-cylindrical lens 114 are integrally mounted so as to swing on a vertical axis and turn in the left and right directions. This means that the central monitoring computer 7 swings the upper mirror 113 either in the swing direction and in the left-right direction or at the same time at the same time by a predetermined angle based on various kinds of weather information, so that the runway by the laser beam is applied to the center of the runway. You can draw a centerline. The intensity of the laser light is such that it can be seen even when the laser light is applied to the target 50 m away.

On the other hand, the water spraying device 12 uses, for example, a sprinkler having a biaxial hinge as shown in FIG. 5, and its concrete structure is as shown in FIG.
21, an intermediate body 123 is attached to the intermediate body 123 via a horizontal rotation shaft 122, and a spray unit body 125 is attached to the intermediate body 123 via a vertical rotation shaft 124. 125a is a spray port. This water spraying device 12 has two patterns, one of which is a pattern in which the vertical rotating shaft 124 is used to swing and rotate the spraying unit main body 125 as shown in FIG. One pattern is a pattern in which the spray unit main body 125 swings and rotates using the horizontal rotary shaft 122 and the vertical rotary shaft 124. In other words, the water spray device 12 includes the spray unit body 12
The water 126 is sprayed from the spray port 125a of No. 5, and the angle and flow rate of the sprayer main body 125 are calculated so as to land on the center of the runway, and the sprayed water is dropped onto the runway (the same figure). d)).

FIG. 6 is a diagram for explaining an example of drive control of the center line setting device 8 by the central monitoring computer 7. The central monitoring computer 7 includes an illuminance meter 4, a weather radar 5, and an anemometer 6.
After capturing weather information from other necessary sensors (ST
11) The drive of the center line setting device 8 is controlled. Specifically, for example, it is determined from the illuminance of the illuminometer 4 whether or not the laser light is required to be generated (ST12). For example, when the illuminance is high and the runway is in a bright state, the laser light is not visualized, so that it is determined that the laser light is not necessary, and subsequently it is determined whether or not the water spray is necessary (ST13). When it is determined that splashing is necessary, only the water spray device 12 is driven (S
T14). That is, when the illuminance as the weather information is equal to or higher than the predetermined value, only the water spray device 12 is driven. Then, it is determined whether or not a predetermined time has elapsed (ST15), and when the predetermined time has elapsed, the process returns to step ST12. The reason for setting the predetermined time is that the water spraying device 12 needs to be driven only when the aircraft is landing, and that new weather information is taken in and drive control is performed more appropriately.

The spray pattern for spraying water from the water spray device 12 is to spray water vertically as in pattern 1 shown in FIG. 7 during the daytime when the illuminance is sufficient. The figure (a) is a schematic diagram, the figure (b) is the figure seen from the direction orthogonal to the runway longitudinal direction, and the figure (c) is the figure seen from the cockpit side of the aircraft. When water is injected vertically like this, the pilot can not only determine the positions of both ends of the runway, but also play a role of indicating the boundaries on both sides of the runway even if it is difficult to understand the boundaries due to, for example, snow. .

In step ST12, when the illuminance falls below a predetermined value, the laser generator 11 is driven (ST16). The laser generator 11 is driven by the upper mirror 1 so that the laser light is applied to the central part of the runway.
By controlling the rotation of 13, the runway center line is formed on the runway.

At this time, it is judged whether or not the splash is necessary (ST17). For example, when the illuminance is not sufficient and the irradiation with the laser beam alone does not allow sufficient visualization, the water spray device 12 is driven together with the driving of the laser generator 11. When the water spray device 12 is driven, the water is, for example, as shown in FIG.
The drive is controlled so that the pattern 2 shown in FIG. The figure (a) is a schematic diagram, the figure (b) is the figure seen from the direction orthogonal to the runway longitudinal direction, and the figure (c) is the figure seen from the cockpit.

In other words, the water sprayed from the water spraying device 12 has a trace of soaring in the shape of a parabola toward the sky and landing on the center of the runway. At this time, if the laser generator 11 is being driven at the same time, the laser generator 1
The laser light from No. 1 hits the spray water, and the runway centerline is visualized so as to draw a runway centerline at the center of the runway, and the runway centerline can be formed on the runway.

In order to collide the laser beam with the spray water to make it visible, it is necessary to adjust the speed and angle of the water by the water spray device 12. Now, distance x, angle θ,
Assuming that the initial velocity of water is v ₀ and the gravitational acceleration is g, the relationship between the angle θ and the initial velocity v ₀ of water is represented by x = v ₀ ² sin 2θ / g.

Under the weather conditions such as rain, fog, snow, and night, the runway centerline is drawn on the runway using only the laser light to guide the landing of the aircraft. Therefore, according to the above-described embodiment, the laser generators 11 are arranged at one side or both sides of the runway 2 at a predetermined interval, and the laser light is emitted from the laser generator 11 to the central part of the runway. Since the runway centerline is drawn artificially, the runway centerline 3 can be formed without placing obstacles in the center of the runway, and the pilot can safely fly the aircraft using the centerline 3 as a clue. You can lead to the center of the road.

Further, the water spraying device 12 is arranged on one side or both sides of the runway 2 at a predetermined interval, and the water spraying device 1
By spraying water 126 vertically from 2 the pilot can easily determine the position of both sides of the runway, and also have the function of indicating the boundary of the runway if there is some snow. If water is sprayed from the water spray device 12 and is controlled so as to land on the central part of the runway 2, the sprayed water landing line can be used as a center line on the runway. You can safely guide the aircraft to the center of the runway.

Further, the laser generators 11 and the water spraying devices 12 are alternately arranged at a predetermined interval on one side or both sides of the runway 2, and when weather information such as illuminance is a predetermined value or more,
Both sides of the runway or the runway centerline 3 can be formed using the water spraying device 12, and when the illuminance is below a predetermined value, the laser generator 11 can be used to form the runway centerline 3 on the runway. If the water spray device 12 is also driven at the same time, the runway center line 3 can be reliably formed on the runway by the laser light hitting the spray water. (Second Embodiment) FIG. 10 is a block diagram showing another embodiment of the runway centerline visual support system according to the present invention.

In this embodiment, a reflection mirror or a prism is installed at the center of the runway 2, and laser light is emitted to the sky from a laser generator 11 installed on one or both sides of the runway through a prism or the like. It is an embodiment in which the runway center line 3 is formed on the runway by irregular reflection.

Specifically, as shown in FIG. 10 (a), the laser generators 11, ... Are arranged at one side or both sides of the runway 2 at a predetermined interval, and at the center of the runway 2 for landing of an aircraft. When the raised portion 20 having a height and a width that does not interfere with the raised portion 20 is provided and the raised portion 20 is formed of a transparent member, the laser generator 11 emits the light into the raised portion 20. An optical element 21 such as a reflecting mirror or prism that receives laser light and reflects it in the sky is installed. At this time, by forming a large number of bubbles inside the light transmitting member that is the raised portion 20 or forming the surface portion in a pear-skin pattern, the laser light from the optical element 21 is visualized by irregular reflection. Has become.

When the raised portion 20 is formed of an opaque member, an optical element such as a reflection mirror or a prism is formed at the outer root of the raised portion 20 as shown in the enlarged view of FIG. 21 is installed so that the laser light emitted from the laser generator 11 is received and reflected to the sky.
When the optical element 21 is installed on the outer side of the raised portion 20 as described above, in order to prevent the optical element 21 from being damaged, the transparent member that protects the optical element 21 from the upper portion of the raised portion 20, for example, by being parallel or inclined. It is provided so as to be covered with the cover 22. The cover 22 also has a structure in which a large number of air bubbles are formed inside or the outer surface portion serving as a laser light transmission path is formed into a satin-like texture so that the laser light can be visualized by diffuse reflection of the light. ing.

Instead of installing an optical element 21 such as a reflecting mirror or prism, a paint in which prism-shaped particles are scattered is applied to form a prism 23 having a triangular prism shape, and a transparent coagulating material is poured into the prism 23. , A long block body 2 having a sectional shape as shown in FIG. 11, for example.
By forming the laser beam No. 4 in FIG. 4, the laser light entering horizontally is irregularly reflected by the prism 23 to be in a visible state.

If such a prism 23 is used, although the approach angle of the aircraft, the course direction, the position (height) of the pilot's driver's seat, and the like vary depending on the model, a coating in which prismatic particles are scattered is applied. Triangular prism 2
By using No. 3, it is possible to visualize it by diffuse reflection from any direction, draw a center line on the runway, and guide the aircraft safely.

In addition, as the simplest embodiment, as shown in FIG. 12, for example, a groove is formed in the central portion on the runway, and acrylic or the like is poured into the groove portion to form a semi-transparent visualization block 26, and laser generation is performed. By applying laser light from the device 11 to the semi-transparent visualization block 26,
The runway centerline 3 can also be drawn on the runway.
Further, as shown in FIG. 13, the laser generator 11 and the optical element 21 or the block body 26 as shown in FIG. 10B or 11 are embedded in the underground of the runway, and the laser generator 11 is passed through the optical path 27 through the optical path 27. It may be configured such that the light enters the optical element 21 or the block body 26 and is visualized by the block body 24 or the block body 26.

Therefore, according to the above-described embodiment, the optical element 21 is installed by installing the optical element 21 on the runway by providing the raised portion 20 having a height and a width that do not hinder the landing of the aircraft. Since the body 26 is installed or embedded in the runway and the laser light is diffusely reflected and visualized, the runway centerline 3 can be easily formed on the runway. (Third Embodiment) FIGS. 14 to 16 are configuration diagrams showing another embodiment of the runway centerline visual support system according to the present invention.

In this embodiment, as shown in FIG. 14, an image pickup camera 31 is installed in the forehead of the aircraft 1 or mounted externally at a height position where it does not hinder landing, and an image is taken at the time of landing of the aircraft. The camera 31 is driven to capture an image of the condition of the runway 2 in front of the camera and input it to the data processing unit 32.

As shown in FIG. 15, the data processing unit 32 takes in the image pickup data of the image pickup camera 31 every predetermined time and converts it into digital data (ST21), and then continuously outputs digital data values having substantially the same brightness. Both sides of the runway 33 are created from the characteristics, and the angles α and β of the both sides 33 with respect to the x-axis are detected as shown in FIG. 16 (ST2
2). After that, a center line is created from the angles of both side lines 33 (ST23). When obtaining this centerline, the angle of the centerline is obtained. The angle of this center line is {(180-
α) + β} / 2, and after the mark data representing the center line is edited and arranged at predetermined intervals on the line of the center line having the angle obtained here, the image data is read out and an appropriate display unit is displayed. Or by displaying on the liquid crystal display unit and displaying an image of this liquid crystal display unit on the windshield (ST24), the pilot in the cockpit can recognize the position of the center line. When the image is displayed on the windshield, a semitransparent sheet or the like may be attached to a part of the front glass that displays the image on the liquid crystal display.

According to such an embodiment, the aircraft is equipped with the image pickup camera 31, creates the lines on both sides of the runway by itself, and creates the position of the center line from these lines.
Since a lanta line mark is attached along this center line and displayed on the display etc., the pilot can be informed of the center line of the runway without installing special components on the runway. The aircraft can be safely guided to the central part.

[0050]

As described above, according to the present invention, the following various effects are exhibited. Claims 1 to 3
According to the invention, by irradiating a laser beam from the laser generator from the side of the runway to draw the center line of the runway in a pseudo manner, the center line can be formed on the runway without obstacles, Therefore, the pilot can safely guide the aircraft to the center of the runway by using the center line as a clue.

Further, by vertically spraying water from the water spraying device installed beside the runway, the pilot can easily determine the positions on both sides of the runway, and also in case of snow or other bad weather conditions. If you can easily know the boundary and control the water sprayed from the water spray device to land on the center of the runway, you can use the water landing line as the center line on the runway. The pilot can use the center line as a clue to guide the aircraft safely to the center of the runway.

Further, when the laser generator and the water spray device are used together, when the weather information, for example, the illuminance is above a predetermined value, both sides of the runway or the center line can be formed by using the water spray device, and the illuminance reaches the predetermined value. In the above case, the center line can be formed on the runway by using the laser generator, and if the water spray device is also driven at the same time, the laser light hits the spray water to surely form the visualized center line on the runway. .

According to a fourth aspect of the present invention, an optical element is installed in the central portion of the runway so as to protect the aircraft with a height and a width that do not hinder the landing of the aircraft, and the laser light generated from the laser generator is installed. Since the visualization is performed via the optical element, the visualized center line can be formed on the runway, and the aircraft can be safely guided.

Further, according to the invention of claim 5, a visualization block body that diffuses reflection is embedded in the central portion of the runway, and a laser beam is emitted from a laser generator from the side of the runway or in the ground to diffuse reflection through the visualization block body. Since it is made visible, the centerline can be formed on the runway without any obstacles, and the aircraft can be guided safely.

Further, according to the invention of claim 6, the image pickup camera is installed by being embedded in or externally attached to the forehead of the aircraft,
With this imaging camera, both sides of the runway were imaged, and the position of the center line was calculated from the angle of both sides to display the center line mark. It is possible to land on the runway along the position of and to guide the aircraft safely on the runway.

[Brief description of drawings]

FIG. 1 is a basic configuration diagram of a runway centerline vision support system according to the present invention.

FIG. 2 is a diagram illustrating an operation procedure of a pilot when the basic system shown in FIG. 1 is used.

FIG. 3 is a diagram showing an example of arrangement of each device constituting the centerline setting device shown in FIG.

FIG. 4 is a diagram illustrating a configuration of a laser generator which is one of the devices shown in FIG.

5 is a diagram illustrating the configuration of a water spray device that is another one of the devices shown in FIG.

FIG. 6 is a flowchart illustrating the operation of the center line setting device.

FIG. 7 is a diagram illustrating an example of a spray pattern in which water is sprayed from a water spray device.

FIG. 8 is a diagram illustrating another spray pattern example of spraying water from a water spray device.

FIG. 9 is a diagram for explaining the relationship between the spray angle of water and the initial velocity of water.

FIG. 10 is a diagram showing a visualized state of laser light when a raised portion in a range that does not hinder the landing of an aircraft is provided in the center of the runway.

FIG. 11 is a diagram in which a block body having a visible prism is installed in the center of the runway.

FIG. 12 is a diagram showing a visualization block installed in the ground of a runway.

FIG. 13 is a diagram in which a laser generator and a visualization block body are installed in the ground of a runway.

FIG. 14 is an explanatory diagram of creating a runway centerline by the aircraft itself.

15 is a flowchart illustrating the operation of FIG.

FIG. 16 is a view showing a part of FIG. 15 with centerline marks on both sides of the runway and the centerline.

[Explanation of symbols]

1 ... Aircraft, 2 ... Runway, 3 ... Runway center line, 4
... Illuminance meter, 5 ... Meteorological radar, 6 ... Anemometer, 7 ... Central monitoring computer, 8 ... Center line setting device, 11 ... Laser generator, 12 ... Water spray device.

Claims (6)

[Claims] 1. A laser generator is installed on one side or both sides of the runway at predetermined intervals, and laser light generated from these laser generators is linearly irradiated to the central part of the runway to generate a laser beam. A runway centerline visual support system characterized by forming a pseudo centerline in the center. 2. A water spray device, which is rotatable at predetermined intervals, is installed on one side or both sides of the runway, and water is sprayed from these water spray devices so as to reach the sky or the central part of the runway. , Runway centerline visual support system, which is used for guidance when landing on an aircraft. 3. Meteorological information acquisition means for acquiring meteorological information including at least illuminance, and a laser generator and water that are installed alternately on one side or both sides of the runway and at predetermined intervals to generate a laser beam. A water spray device for spraying, and when at least the illuminance of the weather information acquired by the weather information acquisition means is at least a predetermined value, only the water spray device is driven so as to land on the center of the runway. Spray water,
When the illuminance is less than or equal to a predetermined value, the laser generator is driven to linearly irradiate the central portion of the runway with laser light, and the water spray device is simultaneously driven as necessary, and the water spray And a drive control means for controlling the sprayed water landing on the central part of the runway from the device by irradiating the sprayed water with laser light to form a center line in the central part of the runway. Runway centerline visual support system. 4. A laser generator installed at one side or both sides of the runway at a predetermined interval, and a laser beam emitted from the laser generator installed at a central portion of the runway at a predetermined interval in an upward direction. A runway centerline vision characterized by comprising a reflecting optical element and a transparent member which is installed so as to cover the upper portion of the optical element and diffuses and reflects the laser light incident through the optical element to make it visible. Support system. 5. A laser generator installed on one side, both sides of the runway or in the ground at predetermined intervals, and a laser from the laser generator embedded in the ground at the center of the runway at predetermined intervals. A runway centerline vision support system comprising: a visualization block body that diffuses and visualizes light. 6. An imaging camera, which is embedded in or externally attached to the forehead of an aircraft that does not interfere with the landing of the aircraft, and which captures an image of a runway in front of the aircraft, and the image data captured by the imaging camera, Equipped with an angle calculation means for calculating the angle of both side lines, and a means for creating a center line using the angles of the both side lines calculated by this angle calculation means, and setting and displaying a center line mark on this center line. A runway centerline visual support system characterized in that