Voice-Controlled Assistive Robot for Physically Disabled Users

Problem statement

People with physical disabilities often rely on human caregivers for small tasks. Existing assistive devices are expensive and lack voice-based natural interaction. A low-cost, voice-controlled robot can empower disabled individuals to access better independence.

Abstract

The project creates a cost-effective assistive robot operated through voice commands. Speech recognition modules interpret commands such as 'move forward', 'stop', 'pick object', or 'call help'. These commands are processed by an ESP32 or Raspberry Pi, which controls motors or actuators. A wireless communication module enables caregivers to receive alerts when needed.

Components required

• ESP32 / Raspberry Pi
• Microphone Module
• Speech Recognition API (Google Speech, Vosk)
• Motor Driver
• DC Motors
• Battery and Chassis

Block diagram

Working

The user gives a voice command which is processed by a speech engine (online or offline). The extracted command is mapped to specific robot actions. The robot executes tasks like movement, object picking, or sending alerts. The system ensures safety by stopping automatically when unknown commands are detected.

Applications

• Assistive robotics for disabled people
• Hospital patient support
• Home-care automation
• Voice-based personal robots