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Distribution-type four-stage structure traffic signal control system

A traffic signal and control system technology, applied in the field of distributed four-level structure traffic signal control system, can solve the problem of high equipment investment and communication costs, high real-time processing speed and work requirements of regional control machines, and relatively high hardware environment and communication line requirements. High-level problems, to achieve the effect of saving investment and construction costs, saving equipment investment costs, and flexible control

Inactive Publication Date: 2005-12-21
TRAFFIC MANAGEMENT RES INST OF THE MIN OF PUBLIC SECURITY
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Problems solved by technology

[0007] Although the central control machine and the regional control machine of this semi-distributed control structure system share the tasks, the regional control machine still needs to coordinate and control dozens or even hundreds of intersection control machines at the same time. Analyzing and processing a large amount of vehicle arrival information, and a large amount of optimization calculation work is required to dynamically determine the control parameters such as cycle length, green light time ratio and green light start time difference. The real-time processing speed and work requirements of the regional controller are still relatively large. High requirements on hardware environment and communication lines, equipment investment and communication costs are still high

Method used

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  • Distribution-type four-stage structure traffic signal control system
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  • Distribution-type four-stage structure traffic signal control system

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Embodiment Construction

[0023]The distributed four-level structure traffic signal control system includes a central control level, a regional control level, a key intersection control level, and an intersection control level or a virtual intersection control level; among them, the central control level is a first-level control, and the main equipment is a central control machine. Set in the urban traffic control center, responsible for coordinating and controlling the area control machine; the area control level is the second level of control, the main equipment is the area control machine, set in the urban traffic control center or sub-center, responsible for coordinating and controlling the key intersection control machine; key intersection The control level is the third level of control, the main equipment is the key intersection control machine, which is set at the predetermined key road intersection, and is responsible for coordinating the intersection control machine or virtual intersection contr...

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Abstract

Distributed traffic signal control system structured in four stages includes central control stage as first level, regional control stage as second level, key road junction control stage as third level. Characters are that road junction control stage or extended virtual road junction control stage as fourth level is setup under the third level. Main device is central controlling machine in the central control stage. Main device is regional controlling machine in the regional control stage in charge of coordinated controlling key road junction controlling machine. Main device is key road junction controlling machine in the key road junction control stage in charge of coordinated controlling road junction controlling machines or virtual road junction controlling machines. Main device is road junction controlling machine in charge of controlling traffic light on / off in road junction. Virtual road junction controlling machine exists in software logically, and does not exist physically.

Description

technical field [0001] The patent of the present invention relates to a distributed four-level structure traffic signal control system and method applied to the regional road network. Background technique [0002] At present, the coordinated traffic signal control system of the regional road network generally adopts a traffic signal control system with a centralized secondary structure or a semi-distributed tertiary structure. Among them, the typical representative of the traffic signal control system with centralized secondary structure is the SCOOT system in the UK. The control structure is as follows: figure 1 shown. The system is divided into two levels of central control and intersection control. The main equipment of the central control level is the central control machine, and the main equipment of the intersection control level is the intersection control machine, which is directly connected to the central control machine through optical fiber or cable communicatio...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/07
Inventor 袁建华赵永进罗俊仪王长君
Owner TRAFFIC MANAGEMENT RES INST OF THE MIN OF PUBLIC SECURITY
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