RU2269820C2 - Transport streams coordinated control system - Google Patents

Abstract

FIELD: transportation traffic control.

SUBSTANCE: system has central computer and traffic data collecting local computer connected to central computer. Local computers are connected with signal sections of traffic lights mounted at crossroads, and video cameras disposed close to signal sections. There are personal computers onto transportation vehicles-users, which computers are specified for visual representation of data at traffic area. System is also provided with scanning units mounted onto traffic area in front of any traffic light section. Scanning units communicate as well with local computers at traffic lights which computers are mounted at the traffic light. Any transportation vehicle has individual transportation number. System allows receiving more complete and precise data on situation at traffic area, which helps to rational distribution of transport streams and more efficient assistance to users for choosing more optimal route.

EFFECT: improved efficiency of operation.

2 cl, 2 dwg

Description

The invention relates to methods for coordinated control of traffic flows and can be used to identify traffic conditions in any area of the city to select the optimal route.

A known system for monitoring cars in a crisis situation, providing alarm signals to the driver about such a situation (US patent No. 5515285, CL G 08 G 1/00, publ. 07.05.96). The known system includes a system processor that controls the signal transmitter, signaling devices, as well as a signal indicator and a signal transmitter to the monitoring site. However, the known system does not provide complete information about the movement of vehicles and in many cases, due to alarm signals, causes excessive nervousness of drivers, which negatively affects the road situation.

A traffic control system is also known that provides the driver with information about dangerous sections of the road (Russian patent No. 2139573, class G 08 G 1/00, publ. 10.10.99). The system contains traffic signs on hazardous sections of the road made in the form of transversely arranged metal strips placed on the roadbed in the form of a Morse code. The vehicles are equipped with a voice memory device, which is connected to a voiceover device and a sensor for reading information from the roadbed. In this case, the sensor is made in the form of an electromagnetic frame placed under the vehicle body.

The disadvantage of this known traffic control system is its limited functionality. The information read from the roadway is only warning about dangerous sections of the road and its volume is insufficient to obtain a complete and reliable picture of the situation on the roadway.

The following known vehicle traffic control system comprises a transmitter and a receiver of signals about the characteristics of its movement (US patent No. 5283573, class G 08 G 1/00, publ. 02/01/94). In this system, video cameras are installed as a transmitter, installed near traffic lights at street intersections, as well as at intersections with several intersections. The signals of these transmitters are processed and fed to the monitor. Depending on the density of traffic flows and traffic intensity, the duration of the phases of the complete switching of traffic lights is determined.

Since a monitor is essentially a stationary type as a signal receiver, the entire movement of vehicles is regulated from a central point taking into account statistical data. Moreover, the participants in the movement themselves do not take part in its regulation. This significantly reduces the functionality of the system and makes it difficult for the subscriber to choose the optimal route through the city streets in conditions of heavy traffic.

There is also known a system for regulating the movement of a vehicle (PCT application No. 90/05969 A2, G 08 G 1/00, publ. 05.31.90), containing a central computer, infrared sensors connected to it, a transmitter and a signal receiver located on vehicles - a pager , on the scoreboard of which the road network is displayed indicating the speed of movement. Speed-sensitive infrared sensors are mounted on bridges above the roadway.

Despite the relatively low price and low cost of servicing subscribers, pagers were not widely used to assess the situation on the roadway. They are not able to indicate to the subscriber the optimal route in a rapidly changing environment on the roadway. In addition, the information obtained using infrared sensors is not large enough and accurate, and it is not possible to use it to further predict possible movement on the lines between intersections.

The following known vehicle traffic control system (PCT application No. 095/24029, class G 08 G 1/0967, published 08.09.95) contains a central computer, regional base processors connected to it for collecting traffic information, a transmitter and personal computers installed on vehicles having radio communications with it, specialized in the visual reproduction of information about the situation on the roadway. The basic processors receive information from weather station instruments that provide information on air temperature, road surface condition, the presence of wind, rain, snowfall and other meteorological indicators, as well as sensors that record the speed of the traffic flow, on road works, on traffic congestion, about parking options and more.

However, the information received from these sensors corresponds only to the moment of their removal and is insufficient to obtain a complete and reliable picture of the situation on the roadway and its possible change in the near future for the correct choice of the optimal route to the intended point.

The closest technical solution to the proposed invention is a system for regulating the movement of road transport (Russian patent No. 2125295, class G 08 G 1/00, publ. 20.01.99). The system contains a central computer, to which regional base processors are connected, to collect traffic information and a transmitter. The vehicles of the subscribers are equipped with computers that have radio communication with the central computer for receiving encoded signals about the situation on the roadway with the possibility of visual reproduction on the monitor of the received information, notifying the subscribers about traffic jams, their causes, duration and issuing recommendations on the preferred route to the intended paragraph. The system is also equipped with video cameras installed at the carriageway for receiving images of road vehicles that are connected to regional base processors. At the same time, in the electrical circuits between the outputs of the cameras located at the traffic lights and the inputs of the processors there is a switching equipment with a control input connected to the green enable circuit in the traffic light through a time relay.

However, the known system for regulating the movement of road vehicles due to the lack of information about the possible advancement of the vehicle on the stages between traffic lights, taking into account the real speed of movement, adjusting the time of signals and changing the direction of the main traffic stream, significantly reduces its functionality. She is not able to rationally distribute traffic flows and effectively assist season tickets in choosing the optimal route along the city streets in conditions of heavy traffic due to the lack of a forecast for changes in traffic flow in the near future.

The objective of the proposed system of coordinated traffic management is to obtain more complete and accurate information about the situation on the roadway, which helps to more efficiently distribute traffic flows and more efficiently assist season tickets in choosing the optimal route along the city streets in conditions of heavy traffic

The technical result - the expansion of functionality by predicting the possible advancement of the vehicle on the stages between traffic lights, taking into account the real speed of movement, regulation of time and direction of signals, as well as changes in the direction of the main transport stream.

The technical result is achieved by the fact that the coordinated traffic control system contains a central computer and local computers connected to it to collect traffic information. The latter are connected with signal sections of traffic lights installed at intersections of roads, and video cameras. The vehicles of subscribers are equipped with personal computers specialized in the visual reproduction of information on the roadway. The system is also equipped with scanning devices installed on the carriageway, in front of each section of the traffic light, and connected to a local intersection computer installed near this traffic light. Each vehicle contains an individual electronic number. At the same time, a program with an electronic model of the city and a database of possible, from previously recorded motion options for each vehicle containing an individual electronic number are stored in the central computer.

The technical result is achieved by the fact that a program based on the creation of a virtual analogue of the city in real time, taking into account all existing components, namely, weather conditions, season, day of the week, time of day, is introduced into the central computer located on the central console of the coordinated control system , various recreational activities, natural disasters and people's habits. A database of possible, from previously recorded traffic options for each vehicle containing an individual electronic number is also entered into the same program.

The program analyzes all possible options for the movement of the vehicle, taking into account the movement of the estimated traffic flow and is constantly adjusted by their actual movement. After clarification, the information is transmitted to the display of the vehicle. This refinement occurs at every intersection.

Depending on the intended traffic flows, the possibility of these flows passing through all the stages between traffic lights is determined. If the threshold (maximum) value of the traffic flow is reached on this leg, the program automatically restricts access due to the prohibition signal of traffic lights and changes in the flow.

Coordinated control of freight flows is carried out by predicting the possible movement of all vehicles in a given section between traffic lights, taking into account the real speed of movement. In the case of a decrease in speed, taking into account the predicted routes of other vehicles, the program takes into account their access to this route due to a delay or a change in the direction of the enabling signal.

The program provides for the creation of an optimal traffic route at the request of a subscriber from one point in the city to another.

Figure 1 is a schematic diagram of the coordinated management of traffic flows, figure 2 shows a fragment of a control system.

The coordinated traffic control system contains a central computer 1 located on the control panel. Weather stations 2, a local computer 3 are connected to it to collect traffic information near the intersection 4. The local computer 3 of the intersection 4 is connected to the signal sections 5 of the multi-section traffic light 6 and the cameras 7 located near them. The system is also equipped with scanning devices 8 installed on the carriageway intersection 4 in front of each section 5 of the traffic light 6. Vehicles 9 as system subscribers 10 can have personal computers 11 specialized in the visual reproduction of information Mations from the roadway. Each vehicle 9 is equipped with an individual electronic number 12.

The central computer 1 contains a program with an electronic model of the city and a database of possible, from previously recorded motion options for each vehicle 9, containing an individual electronic number 12.

The system operates as follows.

Vehicle 9, equipped with an individual electronic number 12, is a subscriber 10 of the coordinated traffic control system of the city. When approaching intersection 4, through a personal computer 11 connected to the local computer 3 of the same intersection, it requests information from the central computer 1 on choosing the optimal route through the city streets in heavy traffic to a specific destination.

At this time, information about the traffic situation at this intersection is transmitted from the video camera 7, located near section 5 of the traffic light 6, to computer 1. The central computer 1 also receives other information regarding traffic, for example, from a city traffic inspectorate, from weather stations 2 with an indication of a weather forecast or warning, from fire departments and others.

The central computer 1, receiving this request from the subscriber 10, enters this information into the electronic program of the city model and, taking into account the travel time to the destination, gives the option of the optimal travel route. The answer is given depending on the requested indicators, namely - the minimum time, minimum distance, minimum fuel consumption and more. Further, the vehicle, crossing the intersection, necessarily passes through the scanner 8, which removes information from the electronic number and records the travel time. This information is transmitted through the local computer 3 to the central computer 1, where it is entered into the electronic model of the city, namely, into the program, which contains information about the possible options for moving this vehicle. The program analyzes all possible options for the movement of the vehicle, taking into account the movement of the estimated traffic flow and is constantly adjusted by their actual movement. After clarification, the information is transmitted to the display of the vehicle. This refinement occurs at every intersection.

Thus, the proposed system of coordinated control of traffic flows by predicting the possible advancement of the vehicle on the stages between traffic lights, taking into account the real speed of movement, adjusting the time and direction of the signals, as well as changing the direction of the main traffic stream, allows you to get more complete and accurate information about the traffic situation the part that helps to rationally distribute traffic flows and more efficiently assist subscriptions when choosing wholesale imalnogo route through the streets of the city in conditions of intensive road traffic.

Claims (2)

1. The system of coordinated traffic management, containing a central computer, local computers connected to it for collecting traffic information, connected with signal sections of traffic lights installed at intersections, and video cameras located near signal sections, personal computers of vehicles - subscribers, specialized for visual reproduction of information on the roadway, characterized in that it is equipped with scanning devices mounted on of the next part of the road in front of each section of the traffic light and connected to the local computer of the intersection installed near this traffic light, and each vehicle contains an individual electronic number. 2. The system according to claim 1, characterized in that the central computer contains a program with an electronic model of the city and a database of possible previously recorded traffic options for each vehicle containing an individual electronic number.

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