Surface Property Measurement with Angle Offset Correction
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Solution Overview
Problem
Existing methods for determining surface properties, such as those on motor vehicles, face challenges in accurately measuring due to variations in the tilt of the apparatus relative to the surface, which can significantly affect measurement results, especially when dealing with curved surfaces.
Innovation Solution
The apparatus employs two radiation detector devices offset by equal and opposite angles relative to the direction of reflected radiation, allowing for the correction of tilt-induced measurement errors and differentiation between changes caused by surface conditions and tilting, using a processor to analyze the intensity ratios from these detectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single radiation detector device is used to measure surface properties, then the apparatus structure is simple, but measurement precision deteriorates due to tilt variations
Solution Approach 1:
The single detector device is segmented into multiple detector devices (first and second radiation detector devices) positioned at different angles. This segmentation allows the system to capture reflected radiation from multiple angular positions simultaneously, enabling tilt compensation and improving measurement precision without significantly increasing overall structural complexity.
Solution Approach 2:
The first and second radiation detector devices are positioned asymmetrically relative to the radiation source, with each detector offset by a predefined angle in opposite directions. This asymmetric positioning creates a geometric arrangement that enables the system to distinguish between changes caused by surface properties and those caused by apparatus tilting, thereby resolving the measurement precision issue.
2Measurement precision
If multiple radiation detector devices are used to correct for tilt, then measurement precision improves, but device complexity increases
Solution Approach 1:
The multiple radiation detector devices serve multiple functions: they simultaneously detect reflected radiation for surface property measurement and provide tilt information for correction. This multi-functionality allows the system to achieve high measurement precision without proportionally increasing device complexity, as the same hardware components perform both measurement and correction tasks.
Solution Approach 2:
The system uses the relative signal intensities from the first and second radiation detector devices as feedback to determine apparatus tilting. This feedback mechanism enables real-time correction of tilt-induced measurement errors, improving measurement precision while maintaining a relatively simple apparatus structure through intelligent signal processing.
3Productivity
If the apparatus is moved across curved surfaces, then productivity increases, but measurement precision deteriorates due to changing tilt angles
Solution Approach 1:
The system performs preliminary action by pre-positioning the radiation detector devices at specific angular offsets before measurement begins. This preliminary geometric arrangement enables the system to proactively capture tilt information across curved surfaces, allowing for subsequent correction of measurement data and maintaining precision during high-speed scanning operations.
Solution Approach 2:
The invention adds an angular dimension to the measurement system by positioning detector devices at different angles relative to the radiation source. This dimensional expansion allows the system to simultaneously measure surface properties while capturing tilt information, enabling correction of measurements taken during rapid movement across curved surfaces and maintaining measurement precision.
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 precise determination of surface properties by distinguishing between tilting effects and surface condition changes, providing accurate and objective measurements of surface properties like gloss, orange peel, and color.
Implementation Method 1
at least a first radiation detector device which receives at least part of the radiation emitted by the at least one radiation device and then scattered and/or reflected by the surface
Implementation Method 2
at least a first radiation detector device which receives at least part of the radiation emitted by the at least one radiation device and then scattered and/or reflected by the surface
Data Source
AI summary
An apparatus for determining surface properties, comprises at least a first radiation device which emits radiation onto a surface to be analyzed, at least a first radiation detector device which receives at least part of the radiation emitted by the at least one radiation device and then scattered or reflected by the surface and outputs at least a first measurement signal which is characteristic of the reflected or scattered radiation, and at least a further radiation detector device which receives at least part of the radiation emitted by the at least one radiation device and then scattered or reflected by a surface and outputs at least a second measurement signal which is characteristic of the reflected or scattered radiation.