Deformation Sensor Reference Adaptation to Prevent False Triggers
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Solution Overview
Problem
Existing sensor devices that detect actuation by deformation of an operating body are prone to false triggering due to environmental influences such as temperature changes, which can cause unintended deformations, affecting the accuracy of actuation recognition.
Innovation Solution
A method that generates and evaluates sensor signals by comparing them to a reference, adapting the reference to the deformation state only when an unwanted change is detected, differentiating it from intentional changes by measuring the speed of the deformation, and outputting an actuation signal based on specific trigger criteria to ensure accurate actuation recognition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the sensor device continuously monitors deformation of the operating body, then the detection capability is improved, but false triggering due to environmental influences such as temperature changes increases
Solution Approach 1:
The patent applies preliminary action by establishing a reference deformation state before normal operation begins. This reference state captures the deformation characteristics of the operating body under specific environmental conditions (temperature, humidity, etc.). During operation, the sensor compares current deformation against this pre-established reference to distinguish intentional actuation from environmental influences, thereby reducing false triggering while maintaining detection capability.
Solution Approach 2:
The patent utilizes parameter changes by monitoring the deformation parameters of the operating body and comparing them against reference parameters. The system detects deviations in deformation magnitude, direction, and rate of change to differentiate between intentional user actuation and unintentional environmental deformations. This parameter-based comparison enables the sensor to maintain high detection precision while filtering out false triggers caused by temperature changes or other environmental factors.
2Shape
If the sensor device is placed behind the sheet metal panel, then the aesthetic appearance is improved, but the detection accuracy is worsened due to environmental influences on the panel deformation
Solution Approach 1:
The patent implements feedback by continuously monitoring the deformation state of the sheet metal panel and comparing it against a reference deformation state. The sensor device receives deformation signals from the panel, evaluates them against the stored reference, and uses this feedback to determine whether an intentional actuation has occurred. This feedback mechanism enables the system to maintain detection accuracy despite the panel being exposed to environmental influences, while allowing the sensor to be aesthetically integrated behind the panel surface.
3Adaptability or versatility
If the reference is adapted to deformation state changes, then the adaptability to environmental conditions is improved, but the ability to detect intentional actuation is worsened due to potential reference shifts
Solution Approach 1:
The patent applies dynamics by implementing a dynamic reference adaptation mechanism that adjusts the reference deformation state based on detected environmental conditions. When environmental changes (temperature, humidity) are detected, the system updates the reference to reflect the new baseline deformation state. However, this adaptation is performed carefully to distinguish between slow environmental drift and rapid intentional actuation, maintaining detection reliability while improving adaptability to varying environmental conditions.
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 enhances the accuracy of actuation recognition by distinguishing between intentional and unintentional deformations, reducing false triggers and improving the reliability of sensor devices in varying environmental conditions.
Implementation Method 1
a sensor element (11) which is arranged at a distance from the operating body (2) to detect a deformation of the operating body (2)
Data Source
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Figure 5~6
AI summary
The invention relates to a method (100) for operating a sensor device (10) for actuation by deformation of a control element (2), comprising the following steps: - generating (101) at least one sensor signal (210) of a sensor device (10) as a result of a deformation of the control element (2), - evaluating (102) the sensor signal (210) by comparing (103) the sensor signal (210) with a reference (200), and detecting (104) a deviation (200.1, 200.2) of the sensor signal (210) from the reference (200). The invention further relates to a computer program product (300), a sensor device (10) for detecting an actuation request based on a deformation, and a vehicle (1).