高速公路雾天诱导系统中关键技术研究

Research on Key Technology of Expressway Fog Guidance System

为了提高高速公路的雾天行车安全性,阐述了高速公路雾天诱导系统的作用和功能,并对其中的核心技术:预警判别技术和负载均衡技术进行了详细阐述。在预警判别技术中,通过建立一个数学模型求出多段高速公路雾况信息的平均值和最大值,并通过与临界值的比较结果,进行相应的预警处理。在负载均衡技术中,提出一种与传统负载均衡技术不同的负载均衡策略,可以有效减轻TCP连接数较大时服务器的压力。

In order to improve the traffic safety in foggy weather,this paper expounds the role and function of expressway fog guidance system,and the core technology including：identification technology for early warning and load balancing technology are described in detail.In the early warning technology,the average value and maximum value of expressway fog information are calculated by establishing a mathematical model,and the early warning will be ready through the comparison with the critical value.In the load balancing technology,a load balancing strategies that diffent from the traditional load balancing technology is proposed,it can effectively reduce the pressure of the server when the number of TCP connections is larger.