PL240950B1 - Method and system for road traffic control - Google Patents

Description

PL 240 950 B1

Description of the invention

The subject of the invention is a road traffic control system, especially in conditions of disturbances and / or obstacles on the road and / or intersection.

There are known solutions from the Polish patent description PL180478B1, in which, for the transmission of special signals in road traffic, a telemetry system is used, enabling the bearing and location of a vehicle, especially a special one. After its location, it is possible to report its approach to other vehicles in the area of its operation.

There are also known solutions from another Polish patent description PL166791B1, including a method and device for measuring the distance of moving objects in relation to an auxiliary object. These known devices include beacons that allow predetermined objects to determine their position.

There are also known solutions from the Chinese patent description CN103106802A, in which light-emitting diodes (LEDs) are used to illuminate the road surface at night. The system is used to improve lighting in conditions where characters and lines are hardly visible. The system includes a microprogrammed control unit as well as a light curtain system (when activated it creates a high red laser light curtain, 1 m long) displayed in front of a stationary vehicle signaling "Stop".

Also known are solutions from another Chinese description CN205541458U, which uses a signal lamp (LED) with anti-fog properties. The stripes and signs gain greater visibility through the use of laser light.

There are also known solutions from another Chinese patent description CN107316470A, in which the traffic control is carried out by calculating the traffic intensity in time and adapting it to the regulation of this intensity. The system includes a drive unit that controls the road lights and traffic lights.

The object of the invention is to enable road traffic control in a situation of changing road traffic conditions, especially at intersections, a local group of intersections and / or roads, as well as on entire road arteries.

The system according to the invention consists of a laser light source wired or wirelessly connected to the controller. The controller, on the other hand, is connected to the supervision center, the input of which is connected to video cameras located above the control place. The controller output is connected with electronic boards, placed in the control place, especially at the intersection.

The invention in its exemplary embodiments is shown in the attached drawing, in which:

Fig. 1 shows the principles of road traffic control by means of a source emitting horizontal road signs with a pre-programmed layout, i.e. without the possibility of adapting the displayed horizontal road signs to changing traffic conditions.

Fig. 2 shows a block diagram of a laser light road traffic control method and system, with the possibility of adapting the displayed road signs to the changing traffic conditions.

Fig. 3 shows a detailed example of traffic control at an intersection with the display of road signs along with vertical road signaling.

Figures 4, 5, 6 and 7 show various traffic situations at an intersection where there is a need to change the position of the displayed road signs due to a collision.

As shown in Fig 1, the general principle of traffic control, without changing the positions of the horizontal signs, is that the system with displayed road stripes is programmed in the microprocessor network controller 5, which, via the wired or wireless transmission network 2, sends signals about the work program to laser light source drivers 1. The controller 5 also sends signals to the electronic boards 3.

The block system shown in Fig. 2 comprises a surveillance center 7 connected via a wired or wireless transmission network 8 with vision cameras 9, transmitting the image to this center 7. The surveillance center 7 is programmed to program the workflow of the road sign display program, which is transmitted via a wired or wireless transmission network 6 to the digital input of the network microprocessor 5. The controller output 5, in turn, through a similar network 2 is connected to the input of the laser light source controllers 1 receiving this route.

Claims (1)

The PL 240 950 B1 transmits signals about the work program to the electronic boards 3 through a wire or wireless transmission line 4. As a result of such a combination of individual parts of the system, the image informing about the situation at an exemplary intersection, generated in vision cameras 9, is transferred to the surveillance center 7 and further to the controller 5, which activates the drivers of the laser light source 1. As a result, depending on the situation at the intersection or road road signs, especially horizontal lines, are correctly displayed. The first detailed example shown in Fig. 3 includes an intersection equal to the displayed road markings and signposts. Individual lanes are marked with capital letters from A to L, with appropriate references. At the intersection with traditionally painted lanes, the movement of a vehicle on lane A1 with the intention of moving straight ahead, prevents the movement of vehicles traveling on lanes K1 and L1. In a situation where there would be a system for controlling the display of horizontal lines at the intersection, thanks to the electronic boards 3, vision cameras 9 and laser light sources 1 located at this intersection, it is redirected along a changed lane (shown by a dashed line) to lane C2, allowing it to drive vehicles running in K1 and L1. The entire system consists of a mast with 1 laser light sources above the intersection, and masts with 3 electronic boards and 9 vision cameras located above each lane. Tables 3 inform about the possibility of driving from a given lane in a specific direction. The laser-displayed horizontal road signs in the form of lines, arrows, inscriptions, symbols are in red (driving impossible) or green (driving possible) and other permitted colors. On the other hand, vehicles waiting to drive in lanes J1, D2 and E2 receive information in the form of a horizontal sign "STOP" in red. The examples in Figs. 4 to 7 show situations where two vehicles collide at an intersection. There are also other vehicles at the intersection. In Fig. 4 the vehicle running on lane B1 is about to turn left onto lane G2. The change in the display of horizontal road lanes will allow him to safely move along the new displayed lane (dashed line), avoiding vehicles in the collision and enter the appropriate lane. In Fig. 5, similarly, a vehicle traveling on lane G1 with the intention to turn left, is redirected bypassing collision vehicles onto lane C1. Fig. 6 shows how a vehicle traveling on lane C2 with the intention to turn left is redirected bypassing collision vehicles onto lane E1. On the other hand, in Fig. 7, a vehicle traveling on lane F2 with the intention of turning left is redirected, similarly avoiding collision vehicles, onto lane B2. By applying the above solution, chaos among road users is avoided. Until the normal condition is restored, i.e. the collision vehicles are removed, at the intersection it is possible to drive vehicles from the supervision center until the arrival of a person authorized to direct traffic, for example a policeman. The system allows for the illumination of the collision area in an incident by the appropriate distribution of horizontal road signs, increasing the safety and capacity of road traffic. It is especially useful in the event of unfavorable weather conditions, such as fog, heavy rain or snow, or air pollution, such as. dust, sand, etc. Patent claim 1. Road traffic control system, especially in conditions of interference or obstacles, having a laser light source connected to the controller, characterized in that the connection of the laser light source (1) with the controller (5) is a wired or wireless line (2), and the controller ( 5) is connected to the supervision center (7), where its input is connected with vision cameras (9) located above the control place, and the controller output (5) with electronic boards (3), located at the control place, especially at the intersection.