Road self-adapting entrance ramp afflux control equipment and method

Abstract

The invention relates to a road self-adapting entry ramp afflux control device and a method thereof, used for adjusting the entry ramp afflux rate of the speedway or the city express way. The core device ramp afflux controller collects the traffic parameters of the flux, the speed, the occupancy and the like detected by the traffic parameter detectors in certain period, through the EXPAlinea arithmetic, the ramp afflux signal lamps change alternately to control the flux, also control the assistant devices of the ramp afflux down counter, the ramp port passing light and the message board and the like, which causes the integral device full of humanness. EXPAlinea arithmetic first adopts the dynamic target occupancy fundamental algorithm to obtain the elemental fundamental algorithm, then performs the smoothness according to the regulation of the last period or adopts the queue preference strategy according to the upstream and downstream of the main line and the ramp. The signal time assignment is the manifestation of the regulation obtained by the EXPAlinea control algorithm, to display by the traffic signal lamp. With the same regulation, the queue length of the ramp is different, and the different signal period and the green ratio are adopted.

Description

technical field [0001] The invention relates to a road self-adaptive on-ramp merge control device and method, which is used to adjust the on-ramp merge flow of expressways or urban expressways, or branch road traffic control with similar traffic characteristics. The control method can also be used for Other industrial controls with similar logistics characteristics belong to the field of intelligent traffic control technology and automatic control technology. Background technique [0002] With the rapid development of the national economy and the improvement of people's quality of life, the number of vehicles for travel has increased significantly, and the demand for ground transportation has greatly increased. In order to relieve traffic pressure, urban expressways have emerged as the times require. The flow of traffic in the distance can improve the traffic congestion in urban areas. However, at present, not only urban roads but also express roads in large and medium-size...

AI Technical Summary

Problems solved by technology

Although these control methods have achieved good control effects, there are certain limitations for the intermittent traffic flow of the entrance ramp of urban expressways in China. In terms of signal timing schemes, foreign countries generally use one vehicle, one green, The method of two vehicles and one green can reduce the impact on the main line to the greatest extent, but it greatly increases the number of vehicle parking, and this method cannot meet the traffic demand of the entrance ramp of urban expressways in China even if the traffic is saturated; Surface roads, expressways, and expressways belong to different road systems, and it is currently impossible to connect the signal information of surface intersections to the expressway or expressway monitoring system; the dynamic estimation in the improved ALINEA algorithm of A94 only considers the state of the main line and ignores the state of the ramp; the basic ALINEA algorithm is not ideal for the sudden change in traffic volume; in addition, foreign on-ramp control generally only controls the signal lights at the entrance of the ramp, while in China it simply controls the lane lights at the entrance of the ramp or only monitors No control; the domestic patent "A Signal Control Method for the Junction of On-ramp and Arterial Road" proposes an on-ramp control method, but this method is based on reducing the accident rate when the on-ramp vehicle merges into the main line, and the given The signal is a speed limit signal, which only serves as a guide, and has relatively large limitations in the case of large traffic on domestic entrance ramps

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