Adjustable Reference Targets for Construction Deformation Compensation
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Solution Overview
Problem
Conventional reference points on construction sites are unstable due to deformation or distortion caused by factors like drying shrinkage in concrete, environmental changes, and heavy loads from large-sized apparatuses, leading to increased measurement errors and installation inaccuracies.
Innovation Solution
A method and system that involves fixing position adjusting mechanisms with targets at reference points, surveying and storing initial 3D coordinates, detecting deviations caused by deformation or distortion, and recovering the initial coordinates using a position adjusting mechanism to maintain accurate alignment and installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reference points are set on construction, then alignment accuracy is improved, but construction deformation causes measurement errors to increase
Solution Approach 1:
The reference point system transitions from static fixed points to dynamic adjustable points. Each reference point is equipped with a position adjusting mechanism that can dynamically compensate for construction deformation, maintaining measurement precision despite changes in the construction structure over time.
Solution Approach 2:
The system implements feedback by continuously monitoring the position of reference points relative to their initial coordinates and automatically adjusting them back to the correct positions. This closed-loop control ensures that alignment accuracy is maintained even when construction deformation occurs.
2Ease of manufacture
If conventional fixed reference points are used, then setup is simple, but deformation leads to installation inaccuracies
Solution Approach 1:
The reference points incorporate adjustable mechanisms that allow them to adapt to construction deformation while maintaining precise positioning capabilities. This dynamic adjustment ensures installation accuracy without significantly complicating the setup process.
Solution Approach 2:
The system performs preliminary surveying to establish initial reference point coordinates before construction begins. This preliminary action creates a baseline that guides subsequent adjustments, maintaining installation accuracy throughout the construction process.
3Measurement precision
If multiple reference points are set for high precision work, then alignment control is improved, but construction deformation causes coordinate deviations
Solution Approach 1:
The system uses feedback control by continuously comparing the current positions of multiple reference points with their initial surveyed coordinates. When deviations are detected due to construction deformation, the system automatically adjusts each reference point back to its correct position, maintaining coordinate stability.
Solution Approach 2:
Each reference point is equipped with independent adjustment capabilities, allowing the system to dynamically compensate for local deformations while maintaining the overall coordinate system integrity across multiple reference points.
Data Source
AI summary
A position adjusting mechanism 30 with a target 10 mounted thereon is fixed at a plurality of reference points S1 to S16 respectively on a construction 1, and initial 3D coordinates C0 of the targets 10 are surveyed and stored. When deformation or distortion of the construction 1 occurs, a deviation ΔC (=Ct−C0) of 3D coordinate Ct of each of the targets 10 from the initial 3D coordinate C0 thereof are detected by a deviation detecting means 26, and each of the targets 10 recovers the initial 3D coordinate C0 by the position adjusting mechanism 30 thereof in accordance with the detected deviation ΔC. Preferably, 3D coordinates of the targets 10 are surveyed by a 3D measuring instrument which collimates the targets 10 to output 3D vectors for the targets 10. The position adjusting mechanism 30 may includes guide stage for guiding the target 10 mounted thereon in a direction or in two directions that intersect at right angle, the direction or directions parallel to a surface F of the construction 1, and feed mechanism for sliding the target 10 on the guide stage in predetermined amount.