基于通信特征分析的智能桥梁防撞偏航预警系统

Intelligent warning system of bridge collision avoidance and yaw based on communication characteristic analysis

为解决水运行业的船只偏航与桥梁防撞问题,降低桥梁防撞偏航漏警率,根据船只的通信特征进行分析,设计一种智能桥梁防撞偏航预警系统。首先,通过架设雷达与摄影机完成对船只航行视频图像的采集及跟踪,根据采集到的数据进行通信特征分析。然后将分析的结果通过射频信号进行实时传输,最后,通过船舶检测算法构成实时船体检测器,对船体进行实时检测。设计的防撞预警系统会结合桥梁预设的警报位置判断船体是否安全:若出现超高或偏航事件,则向船只发出声光报警,完成桥梁防撞偏航预警。实验结果表明:该系统的最高漏警率仅为6%,各种环境下预警发出时间不高于1 ms;在300 m左右及以下可精准预警,远距离预警时船体距离与实际距离相近,误差小于1 m。该系统具有较大的应用价值,值得推广。

In order to solve the problems of ship yaw and bridge collision in the water transportation industry,and reduce the missed warning rate of an intelligent bridge collision avoidance and yaw warning system was designed according to the analysis of the communication characteristics of ships.First,the collection and tracking of ship navigation video images were completed by setting up radars and cameras,the communication characteristics were analyzed based on the collected data,and then the results of the analysis in real time was transmitted through radio frequency signals.Finally,in order to monitor the hull in real time,a real-time hull detector was constructed through the ship detection algorithm.The design method was used to judge whether the hull is safe according to the preset alarm position of the bridge.If there is an over-elevation and yaw event,an audible and visual alarm will be issued to the ship to complete the bridge anti-collision and yaw warning.The experimental results show that the system′s highest missed alarm rate is only 6%,the time for issuing early warning in various environments is no more than 1 ms.It can accurately warn about 300 m and below,the hull distance of the long-distance warning is close to the actual distance,and the error is less than 1 m.This system has great application value.