Survey Device Plumb Bob Laser for Accurate Position Transfer
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Solution Overview
Problem
Current surveying technologies require frequent plumbing of survey rods to ensure accuracy, which is time-consuming and inefficient, especially on uneven ground, and do not effectively transfer prism positions to surfaces other than the ground.
Innovation Solution
A survey device with a plumb bob laser integrated into or near the prism, allowing for accurate location identification without needing the rod to be perfectly plumb, and enabling the transfer of the prism's position to both ground and ceiling surfaces using a self-leveling laser.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the survey rod is frequently plumbed to ensure accuracy, then measurement precision is improved, but time consumption increases and productivity decreases
Solution Approach 1:
The patent replaces the mechanical plumbing process with an optical laser system. The laser emits a vertical reference line that automatically indicates the correct position, eliminating the need for manual plumbing operations while maintaining location accuracy.
Solution Approach 2:
The laser system provides self-aligning functionality by automatically establishing a vertical reference line without requiring user intervention for plumbing operations. The system serves itself by continuously providing the reference line needed for accurate positioning.
2Adaptability or versatility
If the survey rod is frequently replaced and re-plumbed, then adaptability to different locations is improved, but time consumption increases
Solution Approach 1:
The patent replaces repeated mechanical plumbing operations with a single laser system setup. Once the laser is positioned, it continuously provides the vertical reference line for multiple location markings without requiring re-plumbing for each new position.
Solution Approach 2:
The laser system establishes the vertical reference line in advance before marking multiple locations. This preliminary setup allows surveyors to quickly mark multiple points without repeating the time-consuming plumbing process for each location.
3Measurement precision
If the prism is positioned directly above the rod bottom point, then measurement precision is improved, but the system complexity increases due to leveling bubbles
Solution Approach 1:
The patent replaces mechanical leveling bubbles with an optical laser reference system. The laser provides a clear vertical reference line that eliminates the need for leveling bubbles and complex alignment procedures, simplifying the device while maintaining precision.
Solution Approach 2:
The patent extracts and removes the leveling bubble component from the survey rod system. By using the laser reference line instead, the system eliminates the need for these additional alignment components, reducing overall device complexity.
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
This solution significantly reduces the time spent on laying out each point by eliminating the need for frequent plumbing and allows for accurate location marking on various surfaces, potentially saving 50% to 75% of time and minimizing errors due to rod misalignment.
Implementation Method 1
a laser having a laser emission point in general alignment along the shaft portion with the center point of the prism
Implementation Method 2
The detection of the rod may be provided by optical communication between the total station and a prism arranged on the survey rod
Data Source
AI summary
A survey device may include a shaft portion having a longitudinal axis, a prism having a center point and being arranged near the top of the shaft portion and offset laterally relative to the longitudinal axis of the shaft portion, and a laser having a laser emission point in general alignment along the shaft portion with the center point of the prism.