Virtual ad hoc network signal control method and system under equipment offline condition

Abstract

The invention discloses a virtual ad hoc network signal control method and system under an equipment off-line condition. The method comprises the following steps: determining N adjacent online intersections of an off-line intersection according to a road network structure, and determining the upstream and downstream relation; calculating the expected maximum traffic volume of the restricted flow direction of the on-line intersection; determining a constrained flow direction of the online intersection; and constructing a target function and solving a timing scheme with limited online intersections. Through association analysis of upstream and downstream intersections, virtual networking real-time calculation and deduction are carried out on an off-line intersection and an on-line intersection according to a road network topological relation, an on-line intersection scheme is automatically generated according to traffic parameters around the off-line intersection, ad-hoc network area unified collaborative optimization is constructed, and the intelligent control degree of an area around the off-line intersection is improved.

Description

technical field [0001] The invention belongs to the field of traffic signal control, and in particular relates to a virtual ad hoc network signal control method and system when equipment is offline. Background technique [0002] With the increasingly complex road network structure and the gradual increase in the number of motor vehicles, signal control equipment has gradually become an indispensable part of the intelligent management and control of intersections. However, the working status of the signal control equipment depends on the network of the telecom operator. When the network is unstable, the equipment is prone to go offline, and phenomena such as intersection overflow and empty discharge will occur. How to realize the intelligent control of regional signals when the equipment is offline has become an urgent problem to be solved. [0003] In the existing technology, it is mainly the coordinated control when the signal control equipment is online, or the operation ...

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Problems solved by technology

[0004] Aiming at the deficiencies of the above-mentioned prior art, the purpose of the present invention is to provide a virtual ad hoc network signal control method and system when the equipment is offline, so as to solve the problem that the traffic signal control equipment in the prior art is prone to failure when the network is unstable. There are problems that are offline and affect the coordination of multi-intersections

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