Deformable Sensor Calibration for Non-Planar Surfaces
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Solution Overview
Problem
Deformable sensors face challenges in measuring values on complex surfaces without affecting other electrodes, requiring simultaneous multiple measurements, reliable installation on non-planar surfaces, and maintaining mechanical reliability and comfort.
Innovation Solution
A deformable sensor arrangement with stretchable electrodes and layers that can be calibrated using material compensation coefficients to account for temperature and moisture effects, allowing for efficient installation on non-planar surfaces and reliable measurement by comparing signals before and after installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If deformable sensors are installed on non-planar surfaces, then the sensor can conform to complex surfaces and improve adaptability, but the measurement precision deteriorates due to deformation effects
Solution Approach 1:
The patent applies preliminary action by performing calibration measurements before actual use. The sensor is calibrated on the specific non-planar surface it will be installed on, capturing the deformation characteristics in advance. This pre-calibration allows the sensor to compensate for future deformations, maintaining measurement precision while preserving adaptability to complex surfaces.
Solution Approach 2:
The patent utilizes parameter changes by measuring electrical parameters (capacitance, resistance, or impedance) of the sensor under different deformation states. By correlating these electrical parameter changes with known deformation conditions during calibration, the system can compensate for deformation effects and maintain accurate measurements on non-planar surfaces.
2Productivity
If multiple electrodes are used for simultaneous measurements, then measurement productivity increases, but measurement precision deteriorates due to mutual interference between electrodes
Solution Approach 1:
The patent applies feedback by using the measured electrical parameters from multiple electrodes to adjust and compensate for mutual interference effects. The system continuously monitors the electrical state of all electrodes and uses this information to correct measurements, allowing simultaneous multi-point measurements while maintaining precision through active compensation.
Solution Approach 2:
The patent replaces physical isolation of electrodes with electrical field-based compensation. Instead of mechanically separating electrodes to prevent interference, the system uses electrical measurements and computational methods to identify and compensate for interference effects, enabling closer electrode placement for higher productivity without sacrificing precision.
3Ease of operation
If environmental factors like temperature and moisture are present, then the sensor operates in real-world conditions, but measurement precision deteriorates due to material property changes
Solution Approach 1:
The patent applies feedback by incorporating environmental sensors that monitor temperature and moisture conditions. These environmental parameters are fed back to the measurement system, which then compensates for their effects on the deformable sensor's electrical properties. This allows the sensor to operate in real-world conditions while maintaining precision through active environmental compensation.
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
Enables efficient and reliable measurement of values on complex surfaces, including double curved surfaces, by compensating for environmental factors and ensuring accurate calibration, thus improving the installation process and measurement accuracy.
Implementation Method 1
a first stretchable layer (200) having a first yield strain
Implementation Method 2
The sensor can be a capacitive, resistive or impedance sensor
Implementation Method 3
The sensor can be a capacitive, resistive or impedance sensor
Data Source
AI summary
A deformable sensor arrangement includes a deformable sensor attachable to a curved surface. The deformable sensor includes an elastic layer having a Young's modulus at least 0.01 MPa and a first yield strain at least 10%. A first stretchable electrode attaches to the elastic layer, and a stretchable electrically conductive wiring. The first stretchable electrode and the stretchable electrically conductive wiring stretch at least 5% without breaking. An electronic arrangement electrically couples to the first stretchable electrode via the stretchable electrically conductive wiring and obtains a first signal from the first stretchable electrode. An analyzer determines a calibrated value based on the obtained first signal and assembly compensation coefficients, which are based on material compensation coefficients, and a measured signal of the deformable sensor in its installing position. A system and method are for installing the arrangement. A method and computer program determine a value of interest.