Surveying Target Sphere North Pole Level Mount
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Solution Overview
Problem
The existing surveying target spheres obstruct the view of the level, making it difficult to accurately position the center of the sphere above a reference survey point, which can result in deviations from a vertical line and affect measurement accuracy.
Innovation Solution
A surveying target sphere with a level mounted at the north pole, allowing for unobstructed viewing and precise vertical alignment, ensuring accurate positioning above the reference survey point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the level is mounted at the bottom portion (south-pole portion) of the sphere, then the sphere can be positioned above the reference survey point, but the operator cannot view the level directly from above due to obstruction by the sphere, resulting in positioning deviation
Solution Approach 1:
The level is inverted from its conventional position at the bottom of the sphere to the top (north-pole portion) of the sphere. This inversion allows the operator to view the level bubble directly from above without obstruction, while still achieving accurate vertical positioning of the sphere above the reference survey point through the coupling mechanism.
2Ease of operation
If the level is mounted at the north pole, then the operator can view the level from directly above without obstruction, but the structure becomes more complex
Solution Approach 1:
The target device is segmented into distinct functional components: the sphere, the pin pole, and the level mounted on the pin pole. This segmentation allows the level to be positioned at the top of the pin pole (north pole region) where it is easily viewable, while the coupling mechanism at the bottom of the sphere maintains positioning accuracy. Each component performs its specific function independently, simplifying the overall design.
Data Source
AI summary
A surveying target sphere for use in a three-dimensional measurement has a spherical surface having a constant radius from a center and includes a north pole, a south pole, and a central axis passing through the center of the surveying target sphere and linking the north pole and the south pole, and a level is mounted at the north pole.