基于视觉和光纤传感技术的异常事件定位方法
首发时间:2019-11-08
摘要:针对城市快速路异常状态和突发事件等异常事件定位问题,本文提出了基于视觉和光纤传感技术的异常事件定位方法。关于基础设施损坏、车辆追尾等肉眼可见的突发事件,可以通过固定在道路两旁的视觉传感设备进行实时监测,当异常事件发生时,利用双目视觉定位技术,根据视频图像中的异常事件坐标依次经过 "相机坐标系"、"世界坐标系"转换后,定位到快速路实际发生异常的位置上;关于路面裂缝、桥梁塌陷等隐性异常事件,通过分布式光纤进行连续监测,当异常事件发生时,通过判断振动信号最强点的位置进行实际异常定位。通过视觉和分布式光纤传感的联合定位,可以对城市快速路的安全隐患和突发事件进行全方位的实时连续监测和快速定位。
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Abnormal event location method based on vision and optical fiber sensing technology
Abstract:For the problem of locating the abnormal state and emergency events of urban expressway, this paper proposes a locating method of the abnormal events based on vision and optical fiber sensing technology. As for the visible emergencies such as infrastructure damage and vehicle rear end collision, the real-time monitoring can be carried out by the visual sensing equipment fixed on both sides of the road. When the abnormal events happen, the binocular vision positioning technology can be used to locate the actual occurrence of the expressway after the transformation of "camera coordinate system" and "world coordinate system" according to the abnormal event coordinate in the video image. In terms of the hidden abnormal events such as pavement cracks and bridge collapse, they can be continuously monitored by distributed optical fiber. When the abnormal events occur, the actual abnormal location is carried out by judging the position of the strongest vibration signal. By the combination of vision positioning and distributed optical fiber positioning, the hidden dangers and emergencies of urban expressway can be monitored and located in a real-time and comprehensive way.
Keywords: Abnormal position Distributed optical fiber visual sensing
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