Wearable Haptic Pressure Control for Personalized Feedback
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Solution Overview
Problem
Wearable devices struggle to provide personalized haptic feedback to users due to varying user perceptions of contact pressure, necessitating a method to determine appropriate contact pressure for each user.
Innovation Solution
A wearable device equipped with biosensors and pressure sensors to obtain biometric and contact pressure data, using an AI model to calculate and adjust target contact pressure based on user profile and activity state, and adjusting actuator position to ensure optimal haptic feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a wearable device provides haptic feedback to users, then the device use experience is improved, but the user's perception of the haptic feedback varies according to each user
Solution Approach 1:
The patent changes the contact pressure parameter dynamically based on user-specific biometric data and profile information. The system calculates an optimal contact pressure value for each user and adjusts the haptic actuator's contact pressure to this calculated value, thereby resolving the variation in user perception while maintaining improved device use experience.
Solution Approach 2:
The patent performs preliminary actions by obtaining user profile data and biometric data before providing haptic feedback. The system calculates the optimal contact pressure in advance based on this preliminary information, ensuring that the haptic feedback is personalized and consistent for each user from the beginning of the interaction.
2Adaptability or versatility
If the contact pressure of haptic actuators is adjusted for each user, then personalized haptic feedback is achieved, but additional sensors and processing are required
Solution Approach 1:
The patent makes existing sensors serve multiple functions. The biosensors originally intended for general biometric monitoring are also used to obtain data for calculating optimal contact pressure. This multi-functionality approach enables personalized haptic feedback without adding dedicated sensors solely for pressure adjustment.
Solution Approach 2:
The system uses the user's own biometric data and profile information that are already available in the wearable device to calculate and determine the optimal contact pressure. This self-service approach eliminates the need for external measurement devices or additional complex processing systems.
Data Source
AI summary
A method, performed by a wearable device, of providing haptic feedback to a user is provided. The method includes obtaining profile data of the user, obtaining biometric data of the user by using one or more biosensors, calculating, based on the profile data and the biometric data of the user, a target contact pressure to be applied to a body of the user by one or more haptic actuators, measuring a current contact pressure applied to the body of the user by the one or more haptic actuators by using one or more pressure sensors, and adjusting the current contact pressure of the one or more haptic actuators based on the current contact pressure and the target contact pressure.