Geodetic Levelling Staff with Automated Bubble Detection
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Solution Overview
Problem
Existing geodetic levelling methods are prone to human error and inaccurate measurements, especially in low-light or no-light conditions, due to reliance on visual observation of the levelling staff's vertical orientation and inadequate illumination, which complicates the determination of the staff's position.
Innovation Solution
A geodetic levelling staff equipped with a circular level, level detection unit, control circuit, near field communication tool, and lighting system that automatically detects the vertical position of the staff and transmits this information to a level, ensuring accurate measurements by minimizing human intervention and enhancing visibility with integrated lighting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If visual observation of the levelling staff's vertical orientation is used, then the measurement process is simple, but human error increases and measurement accuracy deteriorates
Solution Approach 1:
The patent replaces the manual visual observation method with an automated optical detection system. A detection unit with a light source and sensor automatically detects the bubble position in the circular level, eliminating the need for surveyors to visually assess vertical orientation. This substitution of mechanical/visual inspection with an automated sensing system resolves the contradiction by maintaining operational simplicity while dramatically improving measurement precision through objective, error-free detection.
Solution Approach 2:
The levelling staff performs self-verification of its vertical position through the automated detection system. The detection unit continuously monitors the bubble position and provides feedback, allowing the staff to self-assess its orientation without external human judgment. This self-service capability eliminates human error while maintaining ease of operation, as the staff autonomously determines and communicates its vertical status.
2Illumination intensity
If measurements are performed in low-light or no-light conditions with traditional illumination, then visibility is improved, but measurement accuracy deteriorates due to inadequate lighting and continued reliance on human observation
Solution Approach 1:
The patent replaces the traditional illumination-dependent visual observation system with an active optical detection system that uses its own light source. The detection unit emits light and senses the bubble position directly, making the measurement process independent of ambient lighting conditions. This substitution resolves the contradiction by providing both adequate illumination for visibility and automated detection for precision, eliminating the trade-off between lighting intensity and measurement accuracy.
Solution Approach 2:
The detection unit performs preliminary detection of the bubble position before the surveyor needs to make a judgment. By proactively sensing the vertical orientation and providing this information to the level instrument, the system ensures accurate measurement data is available regardless of lighting conditions. This preliminary action by the detection system eliminates the need for surveyors to struggle with visual assessment in low light.
3Measurement precision
If automated detection systems are added to the levelling staff, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent merges the detection unit, light source, and communication interface into an integrated module that is incorporated into the existing levelling staff structure. The detection unit is positioned to work with the circular level, and all components communicate through a unified control system. This merging approach resolves the contradiction by achieving high measurement precision through automation while minimizing device complexity through integration, avoiding the need for separate, bulky components.
Solution Approach 2:
The detection unit serves multiple functions: it detects bubble position, determines vertical orientation, and communicates with the level instrument. The integrated system performs what would otherwise require multiple separate devices, achieving high precision measurement capabilities while keeping the overall device complexity manageable through multi-functionality. This universal approach allows one component to fulfill several roles that would otherwise require additional complexity.
4Ease of operation
If continuous communication between surveyors is maintained, then measurement coordination is improved, but human error increases due to communication mistakes
Solution Approach 1:
The patent replaces the manual communication channel between surveyors with an automated digital communication system. The detection unit on the levelling staff directly transmits the measured vertical position data to the level instrument electronically, eliminating the need for surveyors to verbally communicate measurement status. This substitution resolves the contradiction by maintaining ease of operation through seamless coordination while dramatically improving reliability by eliminating human communication errors.
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 geodetic levelling measurements by automatically verifying the levelling staff's vertical position and transmitting this data for precise operation, reducing errors and improving measurement reliability in challenging environmental conditions.
Implementation Method 1
at least one circular level, at least one level detection unit... detecting the information that the levelling staff is in the vertical position
Implementation Method 2
at least one lighting system... enhancing visibility with integrated lighting
Data Source
AI summary
A geodetic levelling staff, a method for measuring a height with the geodetic levelling staff and a system including the geodetic levelling staff and a level are provided. The geodetic levelling staff includes a circular level that indicates whether the geodetic levelling staff is in a vertical position, a level detection unit for detecting a bubble position of the circular level, a control circuit that receives detected data performed by the level detection unit and transmits the detected data to a near field communication tool, the near field communication tool for performing a communication from the geodetic levelling staff to the level according to the detected data received from the control circuit, wherein the level operates according to the detected data received from the near field communication tool.