Intersection signal timing dynamic allocation method and system based on radar monitoring

A signal timing and intersection technology, applied in the traffic control system of road vehicles, traffic signal control, traffic control system, etc., can solve problems such as not adapting to changes in traffic flow, and achieve the effect of avoiding waste of green lights and rational deployment

Active Publication Date: 2021-10-19
ANHUI DAER INTELLIGENT CONTROL SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a method and system for dynamic allocation of signal timing at intersections based on radar monitoring. The signal timing scheme is not suitable for problems such as changes in traffic flow, and the signal timing at intersections is adjusted in a full-cycle, real-time, dynamic, and reasonable manner

Method used

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  • Intersection signal timing dynamic allocation method and system based on radar monitoring
  • Intersection signal timing dynamic allocation method and system based on radar monitoring
  • Intersection signal timing dynamic allocation method and system based on radar monitoring

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Embodiment 1

[0038] Figure 3a It is a flow chart of a radar-monitored intersection signal timing dynamic allocation method provided by the present invention, such as Figure 3a As shown, the described method for dynamic deployment of intersection signal timing based on radar monitoring includes:

[0039] S301, monitoring whether there is a passing vehicle in the entrance lane corresponding to the flow direction of the current operation phase. Among them, the monitoring method is all-weather, multi-target, no dead angle, and long-distance monitoring of vehicles flowing in each direction of the intersection through the preset millimeter-wave radar.

[0040] Among them, such as Figure 2a , 2b , 2c show nine phase combination schemes of intersections and the calculation method of the flow ratio of each phase. Figure 2a Indicates the main control flow direction of the intersection and the number of the signal light group corresponding to each flow direction; Figure 2b It represents the...

Embodiment 2

[0076] Such as Figure 3b shown, combined with figure 1 Referring to Figure 2, the process of early signal disconnection and timing dynamic allocation at intersections will be described in detail.

[0077] 1. The system reads the current operating phase of the signal machine and the remaining green light duration g of the current phase in real time j余 , millimeter-wave radar real-time monitoring (upload a set of monitoring data every 50 milliseconds) the current operating phase corresponds to whether there is a vehicle passing through each flow entrance lane; if there is a vehicle passing, the system will continue to read the status of the signal machine, and the millimeter-wave radar will continue to monitor the current operating phase Corresponding to the entrance lanes of each flow direction, if there is no vehicle passing, the radar will pass this signal to the background, and the background will calculate whether the green light duration of the current phase has met the ...

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Abstract

The invention belongs to the technical field of traffic signal lamp control, and provides an intersection signal timing dynamic allocation method and system based on radar monitoring. The method comprises the steps of monitoring whether there is a passing vehicle in an entrance lane of a flow direction corresponding to a current operation phase; when the monitoring result is that the vehicle does not exist, acquiring and judging whether the operation duration of the green light of the current operation phase exceeds a preset minimum green light operation duration threshold value or not; if yes, judging whether the current operation phase is the last phase in the current period or not; when the current operation phase is the last phase in the current period, executing a signal lamp control strategy of the next preset period; and otherwise, calculating and determining the green light operation duration of each phase after the current operation phase in the current period based on the flow ratio of each phase after the current operation phase and the green light residual duration of the current operation phase. According to the invention, full-period, real-time, dynamic and reasonable allocation is carried out on intersection signal timing.

Description

technical field [0001] The present invention relates to the technical field of traffic signal light control, in particular to a method and system for dynamic allocation of intersection signal timing based on radar monitoring. Background technique [0002] At present, the problem of urban traffic congestion is becoming more and more serious, which has brought unprecedented challenges to traffic managers. Signal control, as one of the control methods for vehicles and pedestrians at intersections, exists widely in various intersections in various cities. Signal control clearly defines the differences. Flow to the right of way of vehicles and pedestrians in time and space. However, the current timing scheme often cannot adapt to the change of traffic flow at the intersection due to some problems, resulting in low traffic efficiency at the intersection. Therefore, real-time monitoring of traffic flow at the intersection and timely adjustment of the timing scheme are particularly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/083G08G1/08
CPCG08G1/083G08G1/08Y02B20/40
Inventor 杨军梁子君李国强郝能宝杨潘方杰刘骏胡永全宫永强陈庆
Owner ANHUI DAER INTELLIGENT CONTROL SYST
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