PROJECT TOPICHealthcare, Assistive & Bio-Mechatronics
Smart Voice-Guided Wheelchair
An assistive mobility concept studying hands-free command interfaces, multi-tier sensor collision avoidance, and motorized wheelchair joystick bypass controllers for users with severe motor limitations.
Multi-Modal Hands-Free Assistive Mobility
- ✓Operates completely offline without requiring cloud connectivity for privacy and safety.
- ✓Integrates head-tilt IMU glasses as a reliable continuous steering fallback.
- ✓Surrounds wheelchair frame with ultrasonic sensors that override commands before collisions occur.
The Engineering Challenge
Problem / Objective
Standard electric wheelchairs require manual hand joystick operation, which is unusable for individuals with severe tetraplegia or motor tremors.
Conceptual Signal Flow
System Concept
Offline Voice Command / Head IMU → Intent Validator → Ultrasonic Buffer Zone → Motor Speed Controller.
Architecture Modules
1Powered Wheelchair Motor Driver Bridge
2Offline Natural Voice Processing Unit
3Head-Mounted Tilt Telemetry IMU
4360-Degree Ultrasonic Collision Guard
Hardware Categories
Dual High-Power H-BridgeOffline Voice ProcessorIMU GlassesUltrasonic Array
Technologies & Software
Assistive TechnologyOffline Voice AIIMU TelemetryUltrasonic SafetyVoice Command State MachineObstacle Distance Braking Routine
Engineering Considerations & Edge Cases
- Acoustic noise interference in crowded rooms
- Ramp descent speed runaway protection
Applications
Assistive eldercare mobility
Rehabilitation center navigation
Accessible smart campus travel
Engineering Inquiry & Collaboration
Interested in Developing this Architecture?
Connect directly with Tamizh Tech engineers in Coimbatore to discuss mechanical fabrication, sensor selection, firmware implementation, or turnkey system commissioning.