一、引言“平安城市”是近段时间人们最为关注的热点话题,运用科学、先进的安防技术构建一个强大的安防网络来保证整个城市的安全是当前最为行之有效的。城市安防按功能主要分为道路监控和城市治安监控、智能交通管理三部分,道路监控主要是为交管部门服务,通过实时监控干道车流量,控制并及时调配通勤情况,以缓解交通拥堵,提高行车安全等; I. INTRODUCTION “Safe City ” is a hot topic that people are most concerned about in recent time. It is most effective to use science and advanced security technology to build a strong security network to ensure the safety of the entire city. According to the function, the city security is mainly divided into three parts: road monitoring, urban public security monitoring and intelligent traffic management. The road monitoring is mainly for the traffic control department. It monitors the traffic volume of the trunk road in real time, controls and adjusts the commuting situation in time to alleviate traffic congestion and improve driving Security