Surface Measurement Speed Feedback for Accurate Coordinate Detection
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Solution Overview
Problem
Existing measurement devices struggle to accurately calculate coordinate values of geometry changes when the relative speed between the measuring surface of an object and the measuring instrument is too high, leading to inaccurate geometry evaluations, especially in cases where geometry changes occur consecutively within the processing time.
Innovation Solution
A measurement device that includes a coordinate value calculation unit, a measurement information recording unit, and a speed improperness determination unit to monitor and control the relative speed between the measuring surface and the measuring instrument, ensuring accurate calculation of geometry changes by notifying users of improper speeds and adjusting the motor speed if necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the relative speed between the measuring surface and the measuring instrument is increased to shorten measurement cycle time, then productivity is improved, but measurement precision deteriorates because coordinate values cannot be calculated accurately when geometry changes occur consecutively within the processing time
Solution Approach 1:
The measurement device incorporates a speed improperness determination unit that monitors the time interval between consecutive geometry changes and compares it against a predetermined threshold. When the time interval falls within the threshold (indicating improper speed), the system generates a determination result that feeds back to notify the user or control the measuring instrument, creating a closed-loop feedback mechanism that maintains measurement accuracy while allowing high-speed operation
Solution Approach 2:
The system pre-establishes a threshold value representing the minimum acceptable time interval for accurate coordinate calculation. Before performing measurements at high speed, the threshold is set in advance based on the processing capability of the measurement device, allowing the system to proactively identify and flag speed-related measurement errors before they compromise accuracy
Data Source
AI summary
A measurement device includes: a calculation unit calculating, based on a signal inputted from a measurement instrument, a coordinate value of a position at which the shape of a measurement surface of an object under measurement changes; a recording unit recording measurement information concerning the time interval at which the shape of the measurement surface of the object under measurement changes; and a determining unit determining, if the time interval at which the shape of the measurement surface of the object under measurement changes as recorded by the recording unit is shorter than a prescribed first threshold defined in advance, that the relative speed between the measurement surface of the object under measurement and the measurement instrument is improper. Upon determining that the relative speed is improper, the measurement device communicates that the evaluation of the measurement surface of the object under measurement is not being correctly carried out.