Finite-state machine-based traffic signal scheduling method and device

Abstract

The invention discloses a finite-state machine-based traffic signal scheduling method and device. The method comprises the steps of defining the phase library of an intersection traffic signal; setting a transition path between the phases of the phase library; setting a constraint condition of the transition path between the phases of the phase library; according to the phase library, the transition path between the phases of the phase library and the constraint condition thereof, constructing a finite-state machine; based on the finite-state machine, scheduling traffic signals. Preferably, according to the actual condition of an intersection, a minimum safety time and light color transition constraints are set for the transition path. The embodiments of the invention solve the technical problem of how to ensure the security during the traffic signal scheduling process.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of signal control, in particular to a traffic signal scheduling method and device based on a finite state machine. Background technique [0002] The control of traffic lights at intersections has always been an important means to alleviate traffic congestion, improve traffic efficiency and ensure traffic safety. With the development of technology and the change of actual traffic demand, the road traffic signal control machine (hereinafter referred to as the signal machine) is taking on more and more functions and tasks, which can be roughly divided into: 1) Local control: including timing, induction, Automatic control of different principles such as filter band and artificial manual panel control; 2) remote control priority control: including bus priority, special vehicles, and priority control initiated by on-site personnel through wireless remote control; 3) center priority contro...

AI Technical Summary

Problems solved by technology

[0003] With the increase of control methods and the competition before the control methods, if there is no underlying guarantee mechanism, it is easy to cause the signal machine to appear in an unreasonable state during the conversion of the control method, for example, the phase switching is too fast: the current green light is too Short, vehicles and pedestrians cannot safely pass through the intersection; or there is an unreasonable phase switch: vehicles in the left-turn waiting area cannot leave the intersection in the next phase, blocking the intersection and causing confusion

Images