Haptic Vibration Control for Personalized Rehabilitation Feedback
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Solution Overview
Problem
There is a lack of clarity on which type of tactile/force sense should be presented to users of haptic devices during rehabilitation for movement disorders, as existing haptic devices do not have the capability to adapt their vibration patterns based on individual user needs.
Innovation Solution
A control unit for a haptic device that includes a storage and an execution unit, which controls the vibrator by using correlation data that links multiple vibration modes to specifying information such as user ID, physical disability, rehabilitation level, and body part. This allows the haptic device to select and drive the vibrator with a suitable vibration mode based on the user's inputted specifying information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a haptic device uses fixed vibration patterns, then the device structure is simple, but it cannot adapt to individual user rehabilitation needs
Solution Approach 1:
The system performs preliminary actions by pre-defining multiple vibration modes and storing correlation data that maps specifying information to appropriate vibration modes. When a user undergoes rehabilitation, the control unit automatically retrieves and applies the appropriate pre-prepared vibration pattern based on the user's specifying information, eliminating the need for complex real-time analysis while achieving personalized adaptation.
Solution Approach 2:
The invention applies parameter changes by varying vibration parameters (amplitude, frequency, waveform) across different predefined vibration modes. Each vibration mode contains specific parameter settings tailored to different rehabilitation scenarios. The control unit selects and applies appropriate parameter sets based on specifying information, enabling adaptation to individual user needs through parameter selection rather than complex real-time adjustment.
2Reliability
If the haptic device provides multiple vibration modes for different rehabilitation patterns, then rehabilitation effectiveness is improved, but the control system becomes more complex
Solution Approach 1:
Multiple vibration modes and their corresponding specifying information are prepared in advance and stored in the control unit. This preliminary preparation allows the system to reliably provide appropriate vibration patterns for different rehabilitation patterns without requiring complex real-time decision-making logic, thus maintaining reliability while controlling complexity.
Solution Approach 2:
The control unit is designed with multi-functionality to handle various specifying information types (user ID, physical disability, rehabilitation level, body part) and select from multiple vibration modes. This universal design allows a single control unit to serve multiple rehabilitation scenarios, improving reliability across different use cases while avoiding the need for separate specialized control systems for each rehabilitation pattern.
3Adaptability or versatility
If the system stores correlation data for multiple vibration modes and specifying information, then personalized tactile/force sense is achieved, but data storage requirements increase
Solution Approach 1:
The correlation data is organized with local quality by structuring it to map specific specifying information parameters to corresponding vibration mode parameters. Rather than storing all possible combinations, the data structure focuses on storing only the relevant correlations needed for actual rehabilitation scenarios, optimizing storage efficiency while maintaining personalization capability.
Data Source
AI summary
A control unit controls a vibrator of a haptic device. The control unit includes a CPU as an execution unit and a storage. The storage stores correlation data created by correlating multiple vibration modes and specifying information to each other. The vibration modes are used for presenting a tactile/force sense in accordance with a rehabilitation pattern. The specifying information is used for specifying a rehabilitation pattern. The CPU executes obtaining processing, mode selection processing, and driving processing. In the obtaining processing, based on the correlation data, the CPU selects a vibration mode in accordance with specifying information obtained in the obtaining processing. In the mode selection processing, based on the correlation data, the CPU selects a vibration mode in accordance with specifying information obtained in the obtaining processing. In the driving processing, the CPU drives the vibrator by using the vibration mode selected in the mode selection processing.