3D HVAC Graphic Generation from 2D CAD Drawings
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Solution Overview
Problem
Current CAD systems for building control subsystems face challenges in accurately converting two-dimensional design drawings into three-dimensional graphics, particularly in HVAC systems, due to manual processes that can lead to inaccuracies and incomplete representation of changes, and the independence between design drawings and graphics results in a lack of precise animation and sizing.
Innovation Solution
A method and system that automatically generates three-dimensional building control subsystem graphics from design drawings by recognizing objects, extracting relationships, and mapping them into an interactive three-dimensional user interface, using symbol templates, geometrical analysis, and animation techniques to simulate the state of HVAC systems, allowing for accurate representation and animation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual processes are used to create building control subsystem graphics, then designers can create three-dimensional perspective displays, but the conversion from two-dimensional design drawings to three-dimensional graphics results in inaccuracies and incomplete representation of changes
Solution Approach 1:
The patent replaces manual mechanical processes with an automated computer-based system that uses optical character recognition (OCR) and image processing technologies to automatically convert two-dimensional CAD drawings into three-dimensional graphics. The system automatically extracts objects, relationships, and attributes from design drawings without manual intervention, eliminating human error and ensuring accurate representation of all changes in the design.
Solution Approach 2:
The patent creates an automated copying process where the three-dimensional graphic is generated as a direct digital copy from the two-dimensional design drawing data. The system copies object definitions, relationships, and attributes from the source CAD drawing and transforms them into the three-dimensional representation, ensuring fidelity to the original design without manual reinterpretation.
2Manufacturing precision
If designers manually drag and drop predefined images to form building control subsystem graphics, then three-dimensional perspective displays can be created, but precise sizing of two-dimensional image objects into three-dimensional frame becomes challenging
Solution Approach 1:
The patent replaces manual dragging and dropping operations with an automated sizing system that uses geometric analysis and spatial relationship algorithms. The system automatically calculates the correct dimensions and positioning of objects in three-dimensional space based on the two-dimensional drawing data, eliminating manual measurement and adjustment while ensuring precise sizing accuracy.
Solution Approach 2:
The system performs self-service by automatically determining the appropriate size and position of each object in the three-dimensional graphic without requiring manual intervention. The automated system analyzes the design drawing data, computes spatial relationships, and assigns dimensions autonomously, making the process both precise and efficient.
3Reliability
If building control subsystem graphics are created independently from design drawings, then graphic design flexibility is achieved, but the graphics do not accurately extrapolate from the actual building's structure
Solution Approach 1:
The patent merges the previously independent processes of design drawing creation and graphic generation into a unified automated system. The three-dimensional graphic generation process is directly integrated with the two-dimensional design drawing data, ensuring that the graphic is always an accurate extrapolation of the actual building structure. Any changes in the design drawing are automatically reflected in the three-dimensional graphic.
Solution Approach 2:
The system implements feedback mechanisms where the automated generation process continuously references the design drawing data to ensure accuracy. The system verifies that the three-dimensional graphic accurately represents the building structure by comparing it against the source drawing data, and automatically adjusts any discrepancies to maintain fidelity to the actual building structure.
4Loss of information
If manual effort is involved in creating building control subsystem graphics, then design changes can be represented, but the content of changes to the two-dimensional drawing is often not fully represented in the three-dimensional graphic
Solution Approach 1:
The patent replaces manual updating processes with an automated real-time synchronization system. The system continuously monitors changes in the two-dimensional design drawing and automatically updates the three-dimensional graphic to reflect all changes completely and accurately. This eliminates information loss and ensures that the three-dimensional graphic always contains the complete content of design changes without requiring manual intervention.
Data Source
AI summary
A method includes receiving into a computer processor a building control subsystem design drawing, and identifying a plurality of objects in the building control subsystem design drawing by comparing the objects to a template of objects. The template of objects includes one or more of a representation of a shape, a color, and a texture. A physical relationship among the plurality of objects is determined, and a three dimensional representation of the plurality of objects is retrieved from a three dimensional device library. A three dimensional building control subsystem graphic is generated by mapping the three dimensional representation of the plurality of objects into a three dimensional user interface as a function of the physical relationship. The three dimensional user interface is animated and interactive to monitor and control a building subsystem.