Dynamic division and adjustment method of control subareas in mixed state

An adjustment method and mixed state technology, applied in traffic control systems, road vehicle traffic control systems, traffic flow detection, etc., can solve problems such as inability to exert control efficiency and achieve the best efficiency effect

Inactive Publication Date: 2018-11-30
航天科工广信智能技术有限公司
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  • Abstract
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Problems solved by technology

However, the current signal control strategy suitable for unsaturated or supersaturated state cannot exert the best contr

Method used

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  • Dynamic division and adjustment method of control subareas in mixed state
  • Dynamic division and adjustment method of control subareas in mixed state
  • Dynamic division and adjustment method of control subareas in mixed state

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Embodiment Construction

[0045] The present invention will be further described below in conjunction with the accompanying drawings.

[0046] refer to Figure 1 to Figure 5 , a method for dynamic division and adjustment of control sub-regions in a mixed state, comprising the following steps:

[0047] 1) Assuming that there is no stranded vehicle in the n-1th cycle, after the red light starts, the upstream vehicle starts to queue up and waits downstream, forming a backward from the stop line at a speed v 1 The parking wave spreads upstream, at T A The queuing vehicles spread to the position of the detector at all times and continue to line up in the upstream direction. Let the distance between the detector and the entrance road be L d ;exist At the moment when the red light ends and the green light turns on, the vehicle begins to leave the intersection at a saturated flow rate. 2 The start-up wave propagates upstream, and the time when the start-up wave reaches the detector is T B ; When the stop...

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Abstract

The invention discloses a dynamic division and adjustment method of control subareas in a mixed state and belongs to the field of traffic control engineering. The method comprises the following stepsof 1), obtaining road network information and intersection road flow information; 2), recognizing unsaturated areas and oversaturated areas through utilization of a traffic state recognition algorithm; 3), carrying out subarea division on the unsaturated areas and the oversaturated areas; and 4), carrying out reasonability and high efficiency judgment on the control subareas, thereby realizing dynamic adjustment of the subareas. Compared with the prior, the method has the advantages that the problem that urban road network traffic condition is relatively greatly influenced by peak hours such as morning and evening is overcome; road network real-time traffic condition is fed back; and a subarea division scheme is dynamically adjusted in time.

Description

technical field [0001] The invention relates to the application fields of traffic control engineering and big data analysis, in particular to a method for identifying an oversaturated traffic state and a method for dynamically dividing and adjusting control sub-areas in a mixed state. Background technique [0002] With the development of the urban economy, the problem of traffic congestion continues to intensify. Due to the complexity and randomness of traffic flow changes, the most prominent performance is that due to the influence of morning and evening peak hours, traffic flow changes are more obvious, resulting in urban road network traffic congestion. State changes are frequent and complex, often in a mixed traffic state. However, the current signal control strategy suitable for unsaturated or supersaturated state cannot exert the best control efficiency in the mixed state, that is, the applicable scope or method of the control strategy has certain limitations. Therefo...

Claims

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Application Information

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IPC IPC(8): G08G1/01G08G1/065
CPCG08G1/0125G08G1/0145G08G1/065
Inventor 陈明王勐
Owner 航天科工广信智能技术有限公司
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