基于光纤传感技术的三维虚拟仿真场景建模

3D virtual simulation scene modeling based on optical fiber sensing technology

为打造逼真的虚拟环境,带给用户身临其境的体验感,基于光纤传感技术建立三维虚拟仿真场景模型。采用光纤传感技术采集场景数据,利用平均法去除传感器工作过程中混入的光源噪声、散粒噪声和电路热噪声;将快速原型法作为建模语言,部署仿真场景中各类物体的拓扑关系;采用折叠边算法计算所有顶点的二次误差,将误差值最小的点作为模型新顶点,根据边长和曲率,计算折叠代价,不断更换折叠代价最小的边,直至建模效果满足要求后停止迭代,完成仿真场景建模。实验表明,所建模型获取的变压器位置坐标与实际坐标仅相差0.5 m,变电站三维虚拟仿真场景建模精度最高可达99.8%,所建模型进行场景目标信息采集误差较小,场景建模精度较高。

In order to create a realistic virtual environment and bring users an immersive experience, a three-dimensional virtual simulation scene model is established based on optical fiber sensing technology. Optical fiber sensing technology is used to collect scene data, and the average method is used to remove the light source noise, shot noise and circuit thermal noise mixed in the working process of the sensor;The rapid prototyping method is used as the modeling language to deploy the topological relationships of various objects in the simulation scene;Use the folding edge algorithm to calculate the quadratic error of all vertices, take the point with the smallest error value as the new vertex of the model, calculate the folding cost according to the edge length and curvature, and constantly replace the edge with the smallest folding cost until the modeling effect meets the requirements, stop the iteration and complete the simulation scene modeling. The experimental results show that the difference between the transformer position coordinates obtained by the built model and the actual coordinates is only 0. 5m, and the modeling accuracy of the three-dimensional virtual simulation scene of the substation can reach 99. 8%. The error of scene target information acquisition by the built model is small, and the scene modeling accuracy is high.