Power Wheelchair Navigation Assistance Using Wearable Vibrotactile Haptics

Area of Science:

• Rehabilitation Engineering
• Human-Computer Interaction
• Assistive Technology

Background:

• Power wheelchairs are essential for mobility for individuals with severe disabilities.
• Impaired driving abilities can make power wheelchair operation hazardous.
• Existing navigation aids may not provide sufficient information or may compromise user control.

Purpose of the Study:

• To propose and evaluate wearable vibrotactile haptic armbands for power wheelchair navigation assistance.
• To provide rich, intuitive navigation cues without compromising user control.
• To assess the safety and usability of the haptic system for individuals with limited driving capabilities.

Main Methods:

• Development of haptic armbands with multiple vibrotactile actuators.
• Implementation of a system to convey navigation information through tactile feedback.
• Conducting human subject studies to compare performance with and without haptic assistance.

Main Results:

• A 49% reduction in collisions was observed when using the vibrotactile armbands.
• Participants preferred receiving haptic feedback for navigation.
• Subjects found the armbands comfortable and easy to wear and use.

Conclusions:

• Wearable vibrotactile haptics offer a viable and effective solution for power wheelchair navigation assistance.
• The system enhances safety by reducing collisions while maintaining user control.
• The proposed haptic interface is adaptable and suitable for a wide range of users with mobility impairments.