Measuring Tool Reference Value Judgment via Displacement Variation Analysis
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Solution Overview
Problem
Conventional measuring tools face errors in determining measurement reference values due to vibrations caused by the operating section, leading to inefficiencies in work efficiency and accuracy, as the time lag required to settle vibrations is either too long or too short, resulting in incorrect displacement readings.
Innovation Solution
A measuring tool with a computing section that judges the movable member as stationary when displacement variations are within a permissible range for a predetermined time, allowing for precise storage of the measurement reference value without wasting time or recording it prematurely, using a judgment operation that adjusts based on continuous detection and variation analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the operating section is operated to store the measurement reference value, then the preset operation is completed, but vibrations are transmitted to the body causing errors in the stored reference value
Solution Approach 1:
The system performs preliminary detection of displacement values at predetermined intervals before finalizing the measurement reference value storage. This preliminary action allows the system to detect vibrations and determine whether the body has stabilized, ensuring accurate reference value storage without sacrificing preset operation speed
Solution Approach 2:
The system continuously monitors displacement values at predetermined intervals and uses this feedback to determine whether the body has stabilized after operating section operation. Based on this feedback, the system decides whether to proceed with storing the measurement reference value, thereby eliminating vibration-induced errors while maintaining efficient preset operation
2Measurement precision
If a time lag is introduced to allow vibrations to settle before storing the measurement reference value, then measurement accuracy is improved, but work efficiency deteriorates due to wasted time
Solution Approach 1:
Instead of using a fixed time lag, the system dynamically determines the appropriate waiting period by detecting displacement values at predetermined intervals. The system adapts its timing based on actual vibration conditions, proceeding with reference value storage as soon as stabilization is detected, thus eliminating unnecessary time delays while ensuring accuracy
Solution Approach 2:
The system uses real-time feedback from displacement value detection to dynamically adjust the timing of measurement reference value storage. By monitoring whether consecutive displacement values fall within a predetermined range, the system determines the optimal moment to store the reference value, avoiding both premature storage and unnecessary delays
3Productivity
If the measurement reference value is stored immediately after operating section operation, then work efficiency is improved, but measurement accuracy deteriorates due to vibration-induced errors
Solution Approach 1:
The system implements a feedback mechanism that detects displacement values at predetermined intervals after operating section operation. Only when consecutive detected values indicate stabilization (fall within predetermined range) does the system proceed to store the measurement reference value, ensuring accuracy without significantly delaying the preset operation
Solution Approach 2:
The system performs preliminary detection of displacement values before finalizing the measurement reference value storage. This preliminary check ensures that the body has stabilized, preventing vibration-induced errors while maintaining efficient preset operation by proceeding as soon as stabilization is confirmed
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 effectively excludes errors in measurement reference values by ensuring the movable member is accurately judged as stationary before storing the reference value, optimizing work efficiency and accuracy by avoiding premature or delayed storage.
Implementation Method 1
an encoder 12 having an electrode 121 provided to a closer end to the body 10 of the stylus 11 and a detector head 122 which is provided to the body 10 and electrostatically coupled with the electrode 121 to detect a displacement of the stylus 11 relative to the body 10
Data Source
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AI summary
In a measuring tool (1A), following operations are carried out. In a preset operation, a displacement is detected in response to an instruction from an operating section, and the detected displacement is stored in a storage (131) as a measurement reference value (Xc). In a measurement value computing operation, a measurement value is calculated based on a difference between the present displacement and the measurement reference value (Xc). A judgment operation belongs to the preset operation. In the judgment operation, a movable member (11A) is judged to be stationary relative to a stationary member (10A) when a variation of the displacement detected by the detector (12A) at an interval of a predetermined time (T1) has continuously been within a permissible range for a predetermined time. When the movable member (11A) is judged to be stationary with respect to the stationary member (10A) in the judgment operation, the displacement is stored in the storage (131) as a measurement reference value (Xc).