ORT Odessa school #94Kats Nina

The goal:

Creating a system, which provides a job of airway and different vehicle.

System structure:1. Multimedia system2. Communication

center3. Input and output

information means4. Modulations and

demodulations5. An electronic control

unit 6. Altimeter

Working principle:

This system has to be installed for all vehicles on virtual airway. 1. Take off of flying car.2.1. Making a virtual airway.2.2. Definition and exchange of coordinates.3. Compliance of safety distance.4. Control of height at moving time.5. Agreement of airway with a dispatching one.6. Changing of airway at moving time.7. System protecting from cyberattacks.

JiS

Step 1: Take off of a flying car

Take off of a flying car can be performed by control or in automatic mode. In the second case, human choose a height by himself (from minimal, which depends on construction, to maximal – 100 m).

Step 2.1: Making a virtual airway

On the Earth, along proposed airway, located communication centers. Their coordinates set during installation, after what, they stay unchanged. For airway creation, for the same distance set virtual points. According to the axiom of geometry, every two points can be connected, that the thing which the communication centers do.

(x1;y1;z1) (x2;y2;z1) (x3;y3;z1) (x4;y4;z1)

Step 2.2: Definition and exchange of coordinates

Every communication center has its workzone. There is a special light on every car, where by communication center finds out that there’s a new vehicle in his zone.

Firstable , after finding out, communication center finds coordinates of flying car.

This is done in such a way:

1) Building a coordinate system with the starting point in the communication center.

2) Knowing the coordinates of communication center and using coordinate system, there’re car’s coordinates.

(x1;y1; z1) (x2;y2;z1) (x3;y3;z1) (x4;y4;z1)

(xb,yb, zb)

Step 3: Compliance of safety distance

While the flying car moves on the airway, there're calculation of the safe distance between him and the car in front of him and the desired result displays on the screen.

When the car reach the minimum safe distance, the person receives notification of this.

If the vehicle continues to pick up speed, the system automatically reduces the speed - as long as the distance would be safe again.

(x2;y2;z1) (x4;y4;z1)

(xа,ya, za)h-?

(x1,y1, z1) (x3;y3;z1)

h – is a safe distance.Communication center calculates real distance between the cars, using formula |хb-xa|, and compares it with h. In the case of an invalid rapprochement car, the system automatically resets the speed of the car behind.

Step 4: Control of height at moving time

There’s also an altimeter inside a car, which calculates and shows a height of fly.

While driving on the "airway" car maintains a constant height because her changing can cause an accident.

Step 5: Emergency matching the airway with a control rooms.

In emergency situations driver has opportunity to contact with a dispatcher for the help.

Step 6: Changing of airway at moving time

If during the driving car needs to change the airway, then it’s following algorithm:1. Build a system of coordinates in three-dimensional space (x; y; z).2. The system calculates coordinates of the projection of the vehicle (A).

(x; y; z)

А

В С

A(x0; y0; z0)B(x0; y0; z1)C(xup; yup; z1)

Step 6: Changing of airway at moving time

3. The system calculates distance (Sbc) from the car #2 (image by point С) to projection of our car (point B) and, also, height (Sab).

4. Using these data, the system calculates lifting time (t) of the car (A) and time (t1) when the car will be at the same point.5. If t = t1, then the system will beep to the driver, and will display a warning about the impossibility of recovery and rebuilding the car.Else: rebuilding the car is permitted.

(x; y; z)

A

B C

Sbc=|xup-x1|Sab=z1-z0

t =

t1=

SabV a

=𝑧1−𝑧 0

V a

SbcV c

=𝑧 1−𝑧 0

V 𝑐

Protecting of our systems from cyberattacks can be carried out with the help of RSA or AES algorithms.

Step 7: System protecting from cyberattacks