Correction Device Using Reference Geometry for Motion Errors

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Solution Overview

Problem

Existing correction devices for movable data acquisition devices fail to correct interference data caused by movements, such as vibrations and stick-slip effects, leading to inaccurate geometric data acquisition.

Innovation Solution

A correction device that utilizes a reference geometry within the detection range of the data acquisition device, combined with an evaluation device to correct geometric data based on known reference geometry data, effectively eliminating interference and offsets.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a movable data acquisition device is used to capture geometric data of objects, then the ability to capture large objects and multiple objects from different sides is improved, but interference data caused by vibrations and stick-slip effects during movement deteriorates measurement precision

Engineering Contradiction:

Improveability to capture large objects and multiple objectsVSAvoidgeometric data accuracy

Core Design Contradiction:

Adaptability or versatilityVSMeasurement precision

Solution Approach 1:

A reference geometry is introduced as an intermediary object within the detection range that serves as a stable reference frame. The evaluation device uses this reference geometry to calculate and correct interference data caused by device movement, thereby maintaining measurement precision while enabling movable operation

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system continuously acquires reference geometry data during measurement and uses the evaluation device to calculate interference based on deviations from expected reference data. This feedback loop enables real-time correction of geometric data to compensate for movement-induced interference

Inventive Principle:

Principle #23Feedback

2Ease of manufacture

If existing correction devices are used for calibration, then initial setup is simplified, but they fail to correct interference data caused by movement during actual measurement

Engineering Contradiction:

Improvecalibration simplicityVSAvoidcorrection effectiveness during movement

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The correction system transitions from static pre-calibration to dynamic continuous correction. The evaluation device continuously processes reference geometry data during measurement to calculate and apply real-time corrections, making the system adaptive to movement conditions rather than relying on fixed initial calibration

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The reference geometry correction operates continuously throughout the measurement process rather than being a one-time calibration step. The evaluation device constantly monitors reference geometry data and applies corrections throughout data acquisition, ensuring ongoing correction effectiveness

Inventive Principle:

Principle #20Continuity of useful action

Data Source

PatentEP4589247A1Correction device

Publication Date: 2025.07.23 SENSWORK GMBH

Figure 1~2

AI summary

The invention relates to a correction device for a movable data acquisition device for acquiring geometric data of an object, comprising at least one reference geometry for at least partial arrangement within a detection range of the data acquisition device, and an evaluation device for correcting the geometric data on the basis of reference geometry data of the reference geometry acquired by the data acquisition device.