Laser Plan Projection With Galvanometer Steering for Construction Layout
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Solution Overview
Problem
Existing methods for presenting construction plans on construction sites are often inaccurate, time-consuming, and require skilled workers, leading to increased costs and potential errors due to discrepancies between reality and plans.
Innovation Solution
A projection device equipped with a projector head, memory device, and controller, which uses a laser module and mirror galvanometers to project construction plans onto a site, allowing for real-time adjustments based on the projector's position and orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If manual drawing methods are used to present construction plans, then the setup and installation are simple, but the accuracy and speed of displaying construction plans deteriorate
Solution Approach 1:
The patent replaces manual mechanical drawing methods with an automated optical projection system. The projection device uses laser modules and galvanometer mirrors to project construction plans onto the construction site, eliminating the need for manual chalk lines or pens while maintaining simple setup through wireless operation and intuitive interface.
Solution Approach 2:
The patent creates optical copies of construction plans by projecting digital drawings onto the physical construction environment. The projection system reproduces the construction plan graphics directly on-site, allowing workers to see the intended layout without manually transferring measurements and drawings.
2Device complexity
If manual drawing methods are used to present construction plans, then the equipment required is simple, but the time required to complete the task increases
Solution Approach 1:
The patent replaces time-consuming manual drawing operations with rapid optical projection. The laser-based projection system can display complete construction plans in seconds rather than hours, dramatically improving productivity while keeping the device portable and relatively simple in design.
Solution Approach 2:
The construction plans are prepared and stored in digital format before arriving at the construction site. This preliminary digital preparation allows for instant projection and display without requiring on-site measurement and drawing operations, significantly reducing the time needed to present construction plans.
3Ease of operation
If manual drawing methods are used to present construction plans, then the skill level required is low, but the accuracy and reliability of the construction plan display deteriorate
Solution Approach 1:
The patent replaces skilled manual drawing operations with automated projection technology. The system uses encoders, galvanometer mirrors, and laser modules to precisely project construction plans without requiring operators to have specialized drawing skills, while simultaneously improving accuracy through digital precision.
Solution Approach 2:
The projection device incorporates encoders that provide feedback on the position and orientation of the projector. This feedback mechanism allows the system to automatically adjust and maintain accurate projection alignment, ensuring reliable display of construction plans even when operated by unskilled workers.
4Manufacturing precision
If complex projection systems are used to present construction plans, then the accuracy of construction plan display improves, but the device complexity and ease of operation worsen
Solution Approach 1:
The projection device integrates multiple functions into a single unit: laser projection, galvanometer mirror steering, encoder-based position sensing, and wireless communication. This multi-functional design achieves high projection accuracy while maintaining operational simplicity through integrated control and automated adjustment.
Solution Approach 2:
The projection system performs self-adjustment through encoder feedback and automated alignment algorithms. The device automatically compensates for position changes and maintains accurate projection without requiring complex manual calibration, reducing operational complexity while preserving precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables accurate and efficient projection of construction plans, reducing the need for skilled labor and minimizing errors by allowing real-time adaptation to site conditions, thus enhancing productivity and reducing costs.
Implementation Method 1
a first mirror galvanometer configured to redirect incident light from the laser module toward a second mirror galvanometer, the second mirror galvanometer being configured to redirect the incident light from the first mirror galvanometer toward the set of projection optics
Implementation Method 2
a set of projection optics configured to receive the incident light from the galvanometric system and transform the incident light into a projection of the construction plan on the construction site
Data Source
AI summary
A projection device for displaying construction plans comprises a projector head having projection optics, a laser module, a first minor galvanometer redirecting incident light from the laser module toward a second minor galvanometer that redirects further the incident light toward the projection optics. A memory device stores one or more construction plans. A controller operatively connected to the laser module, the two minor galvanometers, and the memory device chooses a construction plan to be displayed from the memory device, selectively activates the laser module, and selectively causes the first and second mirror galvanometers to follow a path defined by the chosen construction plan concurrently with the selective activation of the laser module so that the incident light redirected toward the projection optics selectively forms a projection of the construction plan on a construction site.