Opto-Electronic Scanning Instrument Thermal Compensation
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Solution Overview
Problem
Existing scanning measuring instruments suffer from reduced accuracy due to thermal influences, which cause shifts in the position and orientation of components, necessitating frequent recalibration and complicating field operations, especially in battery-powered devices.
Innovation Solution
An opto-electronic scanning measuring instrument with integrated temperature sensors and a compensation model that adjusts measurement parameters in real-time based on the current thermal state, using a reference parameter set and compensation coefficients to correct for thermal-induced errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If thermal influences are not compensated, then device complexity is reduced, but measurement precision deteriorates
Solution Approach 1:
The patent replaces mechanical recalibration procedures with an electronic/software-based compensation system. Temperature sensors detect thermal state, and a control unit applies compensation models to correct measurement parameters, eliminating the need for physical recalibration operations while maintaining high precision.
Solution Approach 2:
The patent introduces temperature sensors and compensation models as intermediary elements between the thermal environment and the measurement system. These intermediaries detect and quantify thermal influences, allowing the system to compensate for temperature effects without direct mechanical adjustment.
2Measurement precision
If frequent recalibration is performed to maintain accuracy, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The patent performs preliminary detection of thermal state using temperature sensors before and during measurement operations. By anticipating and pre-compensating for thermal influences, the system maintains accuracy without requiring time-consuming recalibration operations after the fact.
Solution Approach 2:
The compensation system operates continuously during measurement operations, providing ongoing correction of thermal effects in real-time. This continuous compensation eliminates the need to stop measurements for recalibration, maintaining both precision and productivity.
3Measurement precision
If temperature sensors and compensation models are integrated, then measurement precision is maintained, but use of energy increases
Solution Approach 1:
The patent implements temperature sensing and compensation at critical components where thermal influences most significantly affect measurement precision, rather than uniformly across the entire device. This selective approach provides sufficient compensation for maintaining accuracy while minimizing overall energy consumption.
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
Maintains high precision in point coordinate determination by continuously compensating for thermal changes, reducing the need for frequent recalibration and improving scan accuracy despite temperature fluctuations.
Implementation Method 1
thermal influences, which cause shifts in the position and orientation of components
Data Source
AI summary
A method and opto-electronic scanning measuring instrument for in-line compensation of thermal influences on the opto-electronic scanning measuring instrument by adapting a set of instrument's parameters associated with a defined reference thermal state of the instrument in dependence on an actually measured thermal state of the instrument, sensed by thermal sensors of the instrument, and calculating the respective object point coordinate based on the compensated parameter set.