Intelligent traffic control system and method based on wireless Mesh ad hoc network

A technology of intelligent traffic control and traffic control, which is applied in the field of traffic control and intelligent traffic control, and can solve the problems of low robustness and fault tolerance, low intelligence, low reliability and flexibility, etc.

Inactive Publication Date: 2011-05-18
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent publication number is: CN101079772A "intelligent traffic control system based on ZigBee wireless communication" is a kind of intelligent traffic control system using this technology, but this system only realizes the two-way connection between the control center and each intersection, and the traffic at each intersection Traffic flow and signal light status information need to be sent to the traffic control center for unified decision-making, while the optimization and adjustment of signal light timing depends solely on the control instructions issued by the traffic control center, and cannot be automatically realized based on intelligent perception and mutual coordination of data between adjacent intersections. It is concluded that the distributed computing advantages of ZigBe

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  • Intelligent traffic control system and method based on wireless Mesh ad hoc network
  • Intelligent traffic control system and method based on wireless Mesh ad hoc network
  • Intelligent traffic control system and method based on wireless Mesh ad hoc network

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[0130] Example one:

[0131] An intelligent traffic control system based on wireless Mesh ad hoc network, such as figure 1 As shown, the intelligent traffic control system includes: 4 traffic control nodes A, 1 ZigBee regional base station B, mobile communication base station C, and traffic control center D; 4 traffic control nodes A are located at each intersection, inside Each device is connected by RS-232 / RS-485 bus. The neighboring nodes use ZigBee technology to realize wireless Mesh ad hoc communication network and exchange traffic data in real time. ZigBee regional base station B and traffic control center D use GPRS through mobile communication base station C / CDMA data transmission equipment for remote connection;

[0132] Such as image 3 As shown, each traffic control node A includes a traffic flow parameter collection device, a traffic signal control device, and a ZigBee communication module I15. The traffic flow parameter collection device includes a traffic flow video...

Example Embodiment

[0147] Example two

[0148] A method of using the intelligent traffic control system based on the wireless Mesh ad hoc network described in the first embodiment for intelligent traffic control, which is a method that combines ZigBee short-range wireless communication technology and intelligent network technology to control each node in the system The traffic flow parameter collection and traffic signal control equipment is connected to the Mesh self-organizing network through Zigbee wireless communication, and the control target area is predefined according to the GPS node positioning information and the road network topology (this area can be planned as points and lines according to actual needs. , Planar) and neighboring associated nodes in accordance with the BNNC traffic control protocol-that is, the traffic control node based on the neighboring negotiation mechanism of the traffic control protocol, real-time exchange of traffic flow parameters, signal control parameters and n...

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Abstract

The invention relates to an intelligent traffic control system and method based on a wireless Mesh ad hoc network. The control system comprises n traffic control nodes, m ZigBee area base stations, a mobile communication base station and a traffic control center, wherein the n traffic control nodes are positioned in all intersections, and all kinds of equipment in the n traffic control nodes are connected by an RS-232/RS-485 bus; adjacent nodes realize a wireless Mesh ad hoc communication network by a ZigBee technology and exchange traffic data in real time; remote connection is carried out between each ZigBee area base station and the traffic control center by adopting GPRS/CDMA (General Packet Radio Service/Code Division Multiple Access) data transmission equipment through the mobile communication base station; and m and n are respectively integers of 1-100 and 2-256. The system organically combines an advanced ZigBee short-distance wireless communication technology and a modern intelligent network technology; and the control method of the invention adopts a self-coordinating intelligent distribution type control algorithm and can realize the optimal traffic signal control effect.

Description

technical field [0001] The invention relates to the technical field of intelligent traffic control, in particular to an intelligent traffic control system based on a wireless Mesh ad hoc network and a method for traffic control thereof. Background technique [0002] With the rapid development of social economy and the acceleration of urbanization, the number of motor vehicles in major and medium-sized cities in China has increased rapidly, the situation of urban road networks has become more and more complex, traffic resources have become increasingly tense, and traffic congestion and congestion have become increasingly serious. . The effective way to improve the function of urban traffic system is not only to formulate reasonable urban traffic planning and strengthen road traffic construction, but also to establish an advanced and powerful urban traffic signal control system. [0003] At present, the traffic signal control system in service in most cities is still a tradit...

Claims

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Application Information

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IPC IPC(8): G08G1/07G08G1/081H04W84/18
Inventor 周坚和李春贵张增芳孙自广王萌
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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