Optimization method of intersection dynamic comprehensive evaluation and signal control system based on real-time simulation model

A real-time simulation and comprehensive evaluation technology, which is applied in the traffic control system of road vehicles, traffic control system, traffic signal control, etc., can solve the lack of calculation model, the lack of intersection evaluation and timing adaptive system, and the lack of randomness of traffic flow changes Dynamic analysis and other issues to achieve the effect of responsiveness and accuracy

CN103337161AInactive Publication Date: 2013-10-02上海济安交通工程咨询有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2013-10-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an optimization method of an intersection dynamic comprehensive evaluation and signal control system based on a real-time simulation model. Statistical analysis is performed on an intersection vehicle arrival time distribution law and a saturation time headway distribution law, simulation control is performed on vehicles monitored in real time, analytical calculation of traffic flow parameters of an intersection such as mean queue length, queue time and travel vehicle speed, and characteristics such as vehicle exhaust, oil consumption and noise, and acquired information is shared and an optimized signal control scheme is implemented by a third party control platform. The method has the advantages that a real-time data acquisition function is realized by test coils embedded in interfaces at the near end and the far end of an intersection entrance road; the simulation model adopts vehicle arrival and green light termination as triggering conditions of starting a simulation system traffic flow parameter configuration; a saturation time headway is adopted as a time series distribution basis of vehicle leaving; simulation car following and lane changing behaviors are realized by a series of algorithms; and a traffic simulation function has timeliness, accuracy and rapid response.
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Description

technical field

[0001] The invention belongs to the field of traffic design and intelligent traffic system control, in particular to a method for comprehensive evaluation of intersection dynamics and information control system optimization based on a real-time simulation model. Background technique

[0002] Traffic flow assessment is often processed with a homogeneous static calculation method, which is convenient for manual calculation and analysis. For example, in the calculation method adopted by HCM, mathematical methods such as reduction coefficient and average value are usually used. However, the characteristics of traffic flow itself are dynamic and random, so the above algorithm inevitably produces errors. The randomness and dynamics of traffic are manifested in the arrival dynamics of traffic flow. The arrival characteristics of traffic flow are completely different, which directly affects the operation status of traffic flow and the dynamics of timing schemes. In ...

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Embodiment Construction

[0033] Please refer to the accompanying drawings for a further description of the present invention.

[0034] The system of the invention consists of four modules: real-time data detection equipment, computer control center, information transmission system and third-party control platform. The principle of functional cooperation between the four modules is as follows: figure 1 shown.

[0035] 1. The function of real-time monitoring equipment: the detection coil detects the arrival and departure time of the vehicle, the video detector records the vehicle's movement behavior and road characteristics, and these data are transmitted to the computer control center through the information transmission system.

[0036] 2. Functions of the computer control center: The computer control center receives data from real-time monitoring equipment and completes two functions: first, the computer starts the time series generator of the system and the traffic flow operation state judger to b...