Laser Plan Projection With Galvanometer Scanning for Site Layout
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Solution Overview
Problem
Existing methods for displaying construction plans on construction sites are inaccurate, time-consuming, and require skilled workers, often leading to inefficiencies and the need for rework due to discrepancies between plans and reality.
Innovation Solution
A projection device equipped with a projector head, laser module, mirror galvanometers, and a controller that projects construction plans onto a site using reference points, allowing for real-time adjustments and corrections, enabling unskilled workers to accurately align plans with the construction site.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual drawing methods are used to display construction plans, then workers can create layouts on construction sites, but the accuracy and efficiency are poor and skilled workers are required
Solution Approach 1:
The patent replaces manual mechanical drawing operations with an automated projection system that uses laser light and galvanometer mirrors to display construction plans directly on the construction site surfaces, eliminating the need for manual measurement and drawing while significantly improving both accuracy and speed
Solution Approach 2:
The patent creates optical copies of construction plan drawings and projects them directly onto the construction site surfaces using laser projection, allowing workers to see the intended layout without manually transferring measurements, thereby improving both precision and efficiency
2Ease of manufacture
If manual drawing methods are used, then construction plans can be created, but time consumption increases and costs rise
Solution Approach 1:
The construction plans are prepared and digitized in advance, stored in the device's memory, and ready for immediate projection. This preliminary preparation eliminates the time-consuming manual measurement and drawing processes during actual construction implementation
Solution Approach 2:
The automated projection system replaces time-consuming manual drawing operations with rapid laser projection, reducing the time required to display construction plans from hours or days to minutes while maintaining ease of implementation through user-friendly controls
3Measurement precision
If skilled workers are used for manual drawing, then construction plans can be accurately laid out, but labor costs increase
Solution Approach 1:
The patent replaces the need for skilled manual drawing workers with an automated projection system that uses laser technology and galvanometer-controlled mirrors to accurately display construction plans, thereby maintaining high precision while eliminating the requirement for specialized manual drawing skills
Solution Approach 2:
The projection device automatically displays construction plans with high precision without requiring skilled operators. The system self-corrects and maintains accuracy through its automated optical and control mechanisms, allowing unskilled or semi-skilled workers to implement construction layouts effectively
4Productivity
If construction plans are drawn manually, then layouts can be created, but discrepancies between plans and reality are not noticed until after drawing
Solution Approach 1:
The projection system displays the complete construction plan before construction begins, allowing workers to verify the layout against the actual site conditions in advance. This preliminary visualization enables detection and correction of discrepancies before any construction work starts, preventing rework and improving reliability
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 device enhances accuracy and efficiency by allowing real-time adaptation to site conditions, reducing waste and increasing productivity by enabling precise projection and correction of plans before construction, thus minimizing rework.
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 laser module, and two mirror galvanometers
Data Source
AI summary
A projection device for displaying construction plans comprises a projector head having projection optics, a laser module, a first mirror galvanometer redirecting incident light from the laser module toward a second mirror 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 mirror 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.