Design And Development Of LIDR Monitoring System Based On The Point-Data Processing

In recent years, with the development of information technology, the monitoring system has been developed by leaps and bounds, and provides a solid guarantee for the good operation of the national economy. Different with traditional information acquisition device like the camera, video camera, infrared, laser radar has a unique advantage which can work24hours a day with the weather disturbances. That means it can quickly and accurately obtain three-dimensional point cloud data of the object and judge the scene changes more accurately. Laser radar has24hours a day from the unique advantage of the weather disturbances, and so it can quickly and accurately obtain three-dimensional point cloud data of the object, the scene changes more accurate judgments.The ground-based laser radar technology has been widely used, several countries have succeeded in building monuments and statues of the three-dimensional model reconstruction to achieve the objects in a complete and detailed reduction. Compared with the development of laser radar technology hardware, point cloud data processing technology is lagging behind and point cloud model is also difficult to apply to the actual applications, the reason is that the integral properties of the point cloud model of the volume difficult to calculate.Volume, as the basic geometric property of objects, need to be calculated frequently in many applications. At present, volume is basically calculated through the reconstruction of object surface indirectly, increasing the number of unnecessary work. Especially, for the more complex topology, the reconstruction of surfaces may fail so that it can't get the volume.Through the analysis of processing3D point cloud data obtained by laser radar and establishment of the point cloud model to calculate the volume and displacement to monitor the particular scene in accordance with the detection strategy of the dangerous situation, This article wants to develop a set of all-weather, real-time early monitor system, in order to timely risk information publish, reduce the losses caused by disasters.The paper details the system design, and application in the design and implementation of technology and point cloud data processing algorithm. The system use serial programming techniques for laser radar data and control PTZ, and multi-threading technology to improve the efficiency of the serial communication and resolve the problem of multi-serial real-time data collection.The system uses a modular design approach, which is divided into the information collection module, the information processing module, the analysis of early warning modules and information transmission module. System can monitor the area of the railway line easy to collapse and timely judge landslide disaster, and then send the warning information to the specific place. At last the fast algorithm for computing volume also can enhance the speed of the analysis.