Surveying Device Height Measurement Using Laser Plummet Triangulation
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Solution Overview
Problem
Current geodetic surveying devices lack an automated and user-friendly method for determining the height above the ground, which is prone to errors and requires additional accessories, and do not efficiently measure lateral offsets or distances to the east and north.
Innovation Solution
A geodetic surveying device equipped with a height measuring system using a laser plummet and a line sensor for triangulation, allowing for precise detection of the device's height above the ground and lateral offsets, with a design that eliminates the need for additional accessories and simplifies the measurement process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual tape measure method is used for height measurement, then additional accessories are required, but the measurement process becomes more complex and error-prone
Solution Approach 1:
The patent combines the height measurement function with the existing surveying device by integrating a laser plummet and line sensor system that shares the device's standing axis and coordinate system. This merging eliminates the need for separate manual measurement tools like tape measures while reducing overall system complexity through shared components and unified processing.
Solution Approach 2:
The surveying device performs its own height measurement using integrated laser and sensor components without requiring external accessories. The device uses its existing optical axis and coordinate system to automatically determine height above ground point, making the system self-sufficient and eliminating manual intervention.
2Measurement precision
If automated height measurement is implemented, then measurement accuracy is improved, but device complexity increases
Solution Approach 1:
The patent replaces manual mechanical measurement methods with an automated optical measurement system using laser plummet and line sensor. This substitution achieves high measurement precision through optical triangulation while managing complexity by utilizing the device's existing mechanical structure and coordinate system rather than adding independent measurement mechanisms.
Solution Approach 2:
The laser plummet and line sensor system serves multiple functions: it provides height measurement above ground point, determines lateral offsets to the east and north, and integrates with the existing targeting and sighting functions. This multi-functionality reduces the need for separate specialized components, thereby controlling device complexity while enhancing measurement capabilities.
3Extent of automation
If laser plummet and line sensor system is added, then height measurement automation is achieved, but device complexity increases
Solution Approach 1:
The patent positions the laser plummet and line sensor to share the same standing axis and coordinate system as the main surveying device. This equipotential alignment ensures that all measurement components operate from a common reference framework, simplifying data processing and integration while achieving full automation of height and offset measurements without proportionally increasing 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
The system provides accurate, automated height and lateral offset measurements, reducing user error and complexity, and can be easily retrofitted to existing devices, enhancing operational efficiency and accuracy.
Implementation Method 1
a detection unit, in particular a line sensor, for detecting a diffuse backscattering of the laser beam
Implementation Method 2
The height measuring system is designed for determining a height of the surveying device above the ground point based on a position of the diffuse backscattering on the line sensor
Data Source
AI summary
A surveying device for determining the position of a target, comprising a means for orienting a target axis of the surveying device towards the target point, an angle-measuring functionality for the highly precise detection of the orientation of the target axis, and evaluation means for data storage, a height measuring system for determining a height of the surveying device above the ground by means of triangulation, wherein the height measuring system comprises at least one laser plummet for emitting a laser beam along a standing axis of the surveying device onto a ground point, and a detection unit comprising a line sensor for detecting a diffuse backscattering of the laser beam, and wherein the height measuring system for determining a height of the surveying device above the ground point is designed based on a position of the diffuse backscattering on the line sensor.