Research On Safety Distance Monitoring And 3D Reconstruction Technology For Hazardous Chemicals Storage

Hazardous chemical production with the acceleration of industrial system reform is increasing year by year,which also increased the risk of hazardous chemicals in the storage management of the pressure,and the lack of effective regulatory system will lead to security incidents,causing dangerous consequences.The main storage method of hazardous chemicals in china is stocking,the departments of work safety has put stringent requirements about the five-distance(Stack distance,lamp distance,wall distance,column distance and channel distance)for the warehousing environment in order to prevent the occurrence of safety accidents,but at present effective means of supervision is lacked.Through the way that using real-time view of Hazardous chemical stacking storage in three-dimensional scene to meet regulatory needs,to achieve the purpose of five storage monitoring.In this paper,a method of monocular visual three-dimensional geometric reconstruction technology is used to restore the structural of hazardous chemicals stacking and the location of three-dimensional space to achieve the purpose of reproducing the three-dimensional scene of the stacking state.Firstly,the traditional camera imaging model and calibration method are studied,building a five-parameters imaging model of monocular vision with considering the characteristics of the storage environment and the convenience of Site calibration requirements,A two-point calibration algorithm based on identification point is proposed,then the feasibility,robustness and accuracy of the algorithm are verified by contrast experiments.Aiming at the image characteristics of the stacking object,contrasted with image preprocessing and feature extraction algorithm,a target feature extraction scheme was developed.And aiming at the problem of three-dimensional reconstruction,based on the five-parameters imaging model,the target feature is reconstructed from the image plane to a special plane with using hierarchical reconstruction,secondly,the classification method of the target feature points is proposed based on the study of the characteristics of the target imaging,then the constraint condition of the reconstruction of the project from the projective reconstruction to the European reconstruction is formulated according to the characteristic attribute of the target geometry.Finally,the three-dimensional geometric reconstruction algorithm is validated by real image experiments.Experiments show that the algorithm proposed in this paper realizes the three-dimensional scene of the stacking state with high precision.By integrating the 3D reconstruction data,five distance information is obtained so as to achieve the purpose of over limit alarm,which can meet the monitoring requirements of hazardous chemicals storage and stacking.