Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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
View PDF4 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the evaluation methods of driving hazards are based on deterministic methods. However, there are many uncertainties in traffic information. Uncertainty in the evaluation of driving hazards has become an important research direction. There is no such method at present.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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

Examples

Experimental program
Comparison scheme
Effect test

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 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com