Construction road section risk evaluating method based on cloud model

An evaluation method and cloud model technology, which is applied to the traffic control system of road vehicles, traffic flow detection, instruments, etc., to achieve the effect of comprehensive consideration, expansion of application scope, and strong adaptability

Inactive Publication Date: 2017-03-22
CHANGAN UNIV
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Problems solved by technology

However, most of the evaluation methods of driving hazards are based on deterministic methods. However, there are many uncertainties in traffi

Method used

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  • Construction road section risk evaluating method based on cloud model
  • Construction road section risk evaluating method based on cloud model
  • Construction road section risk evaluating method based on cloud model

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Embodiment Construction

[0028] In order to better understand the technical content of the present invention, specific embodiments are given and described as follows in conjunction with the accompanying drawings.

[0029] Aiming at the characteristics of complex driving conditions and complex traffic safety influencing factors in construction road sections, the present invention uses cloud models to comprehensively consider the traffic conflict degree of vehicle operation from macro and micro perspectives, and proposes a cloud model-based evaluation method for driving hazards in construction road sections.

[0030] like Figure 4 Shown, the present invention comprises the following steps:

[0031] 1) Select the upstream transition area of ​​the researched construction section as the target area for data collection, take the front end of the target area as the data collection section, and collect the traffic volume, vehicle speed, and vehicle deceleration on the section within a certain period of time ...

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Abstract

The present invention provides a construction road section risk evaluating method based on a cloud model. The main realization process comprises the steps of (1) data collection, and establishing an original database, (2) selecting an input variable, (3) carrying out input variable initial concept division, (4) carrying out concept jumping and extracting a cloud characteristic value, (5) constructing a rule database and determining a weight value, (6) finding an activation intensity maximum, and determining the level of concept, (7) carrying out rule database access, and obtaining a risk status level, and (8) calculating the concrete score of a driving risk status, and completing quantitative evaluation. According to the method, the cloud model theory is applied to the driving risk status evaluation of a construction road section, the fuzziness and randomness are considered comprehensively, and the method has better adaptability.

Description

technical field [0001] The invention relates to the technical field of road traffic safety, in particular to a cloud model-based method for evaluating driving hazards in construction road sections. Background technique [0002] The cloud model has the characteristics of macro precision, micro fuzziness, macro control, and micro uncontrollability. Its essential unit is the concept cloud composed of cloud droplets. The idea is to take into account both randomness and fuzziness. The cloud model is a two-way cognitive model between a qualitative concept represented by language value and its quantitative representation. It is used to reflect the uncertainty of concepts in natural language. It can not only be explained by classical probability theory and fuzzy mathematics, but also It reflects the relationship between randomness and fuzziness, especially the method of probability to study fuzziness, which constitutes the mutual mapping between qualitative and quantitative. [000...

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Application Information

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IPC IPC(8): G08G1/01
CPCG08G1/0104
Inventor 张驰张宏刘时雨王世伟宫权利袁长伟毛新华沈照庆
Owner CHANGAN UNIV
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