凝冰路况下高速公路行车智能限速系统设计与实现  

Design and Implementation of Intelligent Speed Limit System for Highway Driving with Freezing Road Conditions

作　　者：张宗涛 杜楠 鲍东玉 刘小敏 ZHANG Zongtao;DU Nan;BAO Dongyu;LIU Xiaomin(Shaanxi Transportation Holding Municipal Road&Bridge Group Co.,Ltd,Xi'an 710065,China;Shaanxi Communications Holding Group Co.,Ltd,Xiyan Branch,Xi'an 710016,China;School of Electronics and Control Engineering,Chang'an University,Xi'an 710064,China)

机构地区：[1]陕西交控市政路桥集团有限公司,西安710065 [2]陕西交控运营管理公司西延分公司,西安710016 [3]长安大学电子与控制工程学院,西安710064

出　　处：《交通与运输》2023年第5期14-18,共5页Traffic & Transportation

基　　金：陕西省交通运输厅交通科研项目(19-34K)。

摘　　要：由于高速公路覆盖范围广,部分地区易发生路面凝冰等情况,导致路面发生交通事故的概率增大。为提高凝冰路况下高速公路的行车效率及安全性,设计了一种基于交通流短时预测的智能限速系统。首先,基于灰度模型分析凝冰路况下的交通流状态,构建交通流短时预测模型;其次,根据交通流预测数据构建高速公路智能限速模型,并利用模型模拟退火算法计算不同凝冰路况下的限速值;最后,基于B/S架构研发凝冰路况下的高速公路智能限速系统。该系统可实时采集路面凝冰信息和交通流数据,有效预测凝冰路段的交通流短时状态,计算相应的限速值,并发布预警与限速信息,实现高速公路智能化管控。In the case of ice coverage on the highway,the friction coefficient of the road surface decreases and the probability of traffic accidents of cars increases.In order to improve the efficiency and safety of highway traffic under icy road conditions,an intelligent speed limit system based on short-time traffic flow prediction is designed.Firstly,a traffic flow short-time prediction model is constructed based on the gray-scale model to simulate the traffic flow state in the future moment.Secondly,the intelligent speed limit model is established based on the traffic flow prediction data,and the speed limit value is calculated by utilizing the simulated annealing algorithm.Finally,the intelligent speed limit system for highways under icy road conditions is designed and implemented based on B/S architecture.After testing,the system can collect the ice information and traffic flow data,predict the short-time traffic flow status,calculate the speed limit value and release the warning information,and realize the intelligent management of highway.

关 键 词：高速公路 路面凝冰 智能限速系统 交通流 短时预测 

分 类 号：U491[交通运输工程—交通运输规划与管理]