Displacement Meter Setpoint Feedback for Accurate Auto Adjustment
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Solution Overview
Problem
Existing optical displacement meters require manual adjustment of setpoints by users, which is burdensome and challenging due to the complexity of attributes like emitted light, measurement mode, filter type, calculation times, and refractive index, making it difficult for users to achieve accurate measurements without extensive knowledge.
Innovation Solution
A setpoint adjustment apparatus that includes an acquirer, storage, determiner, and changer to automatically adjust measurement conditions by acquiring reference workpiece data, determining if the measurement values meet desired criteria, and changing setpoints as necessary to ensure accurate measurements, reducing user burden.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual adjustment of applying setpoints is performed by user, then measurement accuracy can be achieved, but user burden and operation complexity increase significantly
Solution Approach 1:
The system performs self-adjustment of applying setpoints by automatically comparing measurement values with desired values and changing setpoints accordingly, eliminating the need for manual user adjustment while maintaining measurement accuracy
Solution Approach 2:
The system implements a feedback mechanism where measurement values are continuously compared with desired values, and the applying setpoints are automatically adjusted based on the comparison results, creating a closed-loop control system that achieves accurate measurement without user intervention
2Reliability
If multiple attributes of applying setpoints are adjusted manually, then proper measurement conditions can be established, but determination difficulty and time consumption increase
Solution Approach 1:
The system automatically determines and adjusts all applying setpoint attributes (amount of emitted light, measurement mode, filter type, calculation times of moving average, sampling period, cut-off frequency, and refractive index) through self-service mechanisms, eliminating the complexity of manual determination for users
3Ease of operation
If automatic adjustment of applying setpoints is implemented, then user burden is reduced, but system complexity increases
Solution Approach 1:
The control device performs multiple functions including acquiring measurement values, comparing with desired values, determining setpoint adjustments, and executing changes, consolidating these functions into a single multi-functional system that reduces overall complexity despite the automated capabilities
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
Automatically adjusts setpoints to achieve accurate measurements, reducing the complexity and effort required for users to set up measurement conditions, thereby improving measurement efficiency and accuracy.
Implementation Method 1
a light source to emit light to the reference workpiece
Implementation Method 2
a light receiver to receive reflected light from the reference workpiece
Implementation Method 3
acquire a measurement value indicating a displacement of a reference workpiece on the basis of a reception light signal received from a displacement meter
Data Source
AI summary
A setpoint adjustment apparatus for a displacement meter (10) includes a determiner (343) to determine whether a measurement value acquired by an acquirer (341) in measurement of a reference workpiece using an applying setpoint, to be used in measurement of the reference workpiece, is within the range of a desired measurement value (352), and a changer (345) to change the applying setpoint. When the measurement value is within the range of the desired measurement value (352), the applying setpoint used in acquisition of the measurement value is employed as an applying setpoint for inspection of a measurement target (1). When the measurement value is out of this range, the applying setpoint used in acquisition of the measurement value is changed to a different applying setpoint, and whether the measurement value from the reference workpiece using this applying setpoint is within the range of the desired measurement value (352) is determined.