Centralized traffic control mechanism for crossroad

A crossroads and mechanism technology, applied in the field of computer network technology and intelligent transportation, can solve the problems of still few

Inactive Publication Date: 2012-06-13
SUN YAT SEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its related research is mainly on the route of vehicles in traffic flow, vehicle management, vehicle respo...

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  • Centralized traffic control mechanism for crossroad
  • Centralized traffic control mechanism for crossroad

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Embodiment Construction

[0017] There are two control algorithm implementations:

[0018] One is that every car within the control range of the intersection sends a REQ message to the controller C. There is no traffic between cars, and all information processing is carried out in the controller C. After C receives the REQ message from the car, it will process it and Reply to the PMS message separately, any car that has sent the REQ message can only pass after receiving the PMS message, otherwise wait.

[0019] The other is to send a detection message to the front after a car enters the lane to determine whether there is a car waiting in front of it. If there is a car in front of it, it also keeps waiting after maintaining the front-rear relationship in the front car. If there is no car in front of it, then send a REQ message to controller C, and wait for a reply. In this scheme, cars can communicate with each other, and only the first car passing each time sends REQ to controller C, and the passing ...

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Abstract

The invention relates to a centralized traffic control technology for a crossroad. At present, traffic lights are generally used as a control mode of the crossroad, but a technical mode of the traffic lights is fixed, so that the response cannot be made according to actual road conditions and the passing efficiency of the crossroad is very low in special road conditions, such as crossroads with great differences in transverse-longitudinal one-way traffic volume at intersections during different time slots in one day. The invention provides a technology for centralized management of the passing of traffic flows at the crossroads; a controller is used for grasping the passing states of all vehicles in the crossroads in real time through wireless communication and giving an optimal passing mechanism according to the current road conditions. A centralized controller is applied to the centralized traffic control technology disclosed by the invention and is arranged in the crossroad; each vehicle is additionally equipped with a transmitting-receiving device which can be interactive with the centralized controller; or original hardware of each vehicle is upgraded so as to achieve the transmitting and receiving functions between the vehicle and the centralized controller.

Description

Technical field: [0001] The invention relates to the fields of computer network technology and intelligent transportation. technical background: [0002] At present, traffic flow control at intersections is mainly traffic light control. The traffic light control mode is simple and reliable, but it cannot flexibly make judgments based on road conditions, resulting in low traffic flow efficiency at intersections in many cases. With the development of science and technology, intelligent transportation has developed greatly, and there are many related researches, such as traffic information service system (TIS), traffic management system (TMS), public transportation system (PTS), vehicle control system ( VCS) and so on. However, the relevant researches are mainly on the routes of vehicles in traffic flow, vehicle management, and information processing of vehicles responding to emergencies, etc. There are still few studies on improving the traffic efficiency of intersections. I...

Claims

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Application Information

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IPC IPC(8): E01F13/04E01C1/02
Inventor 吴维刚刘享
Owner SUN YAT SEN UNIV
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