Industrial Measurement Probe Position Correction
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Solution Overview
Problem
Existing industrial measurement devices face inaccuracies due to changes in the relative position between the holder and the measurement object during measurement, leading to falsified results.
Innovation Solution
The method involves using acceleration sensors to determine and compensate for changes in the relative position between the holder and the measurement object, allowing for precise correction of measurements without the need for continuous absolute position determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the holder is fixed relative to the measurement object, then measurement stability is improved, but device complexity increases due to grounding requirements
Solution Approach 1:
The patent replaces the mechanical grounding system with an optical reference system. Instead of physically grounding the holder to ensure stability, the invention uses a reference beam that is reflected from the measurement object back to the interferometer. This optical reference replaces the need for mechanical fixation, allowing the holder to remain mobile while maintaining measurement stability through optical referencing.
2Measurement precision
If acceleration sensors are added to determine position changes, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The patent makes the interferometer serve multiple functions: it not only measures the primary measurement quantity but also simultaneously detects position changes of the holder through the reference beam. By configuring the reference beam to reflect from the measurement object and return to the interferometer, the same device measures both the object's features and the holder's position, eliminating the need for separate acceleration sensors.
Solution Approach 2:
The reference beam acts as an intermediary that carries information about holder position changes. Instead of directly measuring holder movement with sensors, the patent uses the reference beam as a mediator that encodes position information through its optical path length changes, which are then decoded by the interferometer to correct measurement data.
3Measurement precision
If continuous absolute position determination is implemented, then measurement accuracy is improved, but loss of time increases due to frequent measurements
Solution Approach 1:
The patent implements continuous monitoring of holder position through the reference beam that continuously reflects from the measurement object back to the interferometer throughout the measurement process. This continuous optical measurement eliminates the need for discrete, time-consuming position checks, allowing real-time position tracking and correction without interrupting the primary measurement workflow.
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 approach enables quick, exact, and reliable determination of the shape of measurement objects, particularly in cases of non-cylindrical distortion geometry, by effectively compensating for movements and positional changes, thus enhancing measurement accuracy.
Implementation Method 1
a reference beam (15) is reflected from the measurement object (11) into the interferometer (18)
Implementation Method 2
at least one distance sensor is provided, with which the instantaneous distance of a reference point of the measurement probe from a wall of the measurement object can be determined
Data Source
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AI summary
The invention relates to a device for industrially measuring measurement objects comprising a measuring probe that can be led up to the measurement object, on which measuring probe at least one distance sensor is provided, by means of which the instantaneous distance of a reference point of the measuring probe from a wall of the measurement object can be determined. The measuring probe is rotatably supported on a retainer, which is fixed in relation to the measurement object and/or the position of which in relation to the measurement object is known. The device also comprises an evaluating apparatus, which is designed to receive at least one distance value determined by the distance sensor and to associate said at least one distance value with a rotational position of the measuring probe in the context of a measurement. Means are provided for determining a change in the relative position between the retainer and the measurement object occurring during the measurement.