Engineering Drawings Automatically Generate Optimization Algorithm

Piping design is needed in many industrial areas including petrochemical, chemical, light, pharmaceutical, nuclear, power and civil industry. Isometric drawing is one of the important documents in plant piping design. Isometric drawing is the isometric projection of pipe systems in the process plant. While describing all the details in the pipe systems, isometric drawing becomes the key drawing for the construction and fabrication of pipe systems. Because of its importance in plant design and large amount, the automated isometric drawing is absolutely necessary and also difficult in the research and development of computer aided plant design system. The paper focus on the thorough research of automated isometric drawing, including: Analyzing the rules in isometric drawing: The three-dimensional piping model is the base of isometric drawing. The graph in isometric drawing must be consistent with the topology relations in the three-dimensional model, but not be drawn in one uniform scale. Based on the result of analyzing the rules in isometric drawing, the template-based method is proposed for representing the different and unrelated drawing rules in an uniformed way. The template-based rule representation describes the characteristics of piping items and allows the user to configure the parameters in the template to generate automatically isometric drawings of various industrial standards. Modeling of isometric drawing: Aiming at the integration of models in two-dimension and three-dimension as needed in automated isometric drawing, the line-node connection model is proposed as an integrated piping model scheme in two-dimension and three-dimension. The line-node based integrated piping model enables the integration of modeling and engineering graph generation, and satisfies various and complicated requirements of modeling and...