Voice Command System for Disabled People: Computer Engineering Guide
1. Introduction
Overview of the project.
Objectives of the system: Develop a voice-activated system to assist disabled individuals in performing everyday tasks.
Scope of the system: Applicable in homes, workplaces, and public facilities to enhance accessibility.
2. Requirements Analysis
Functional Requirements:
· - Voice recognition and processing to execute user commands.
· - Integration with smart devices for task execution (e.g., lights, appliances).
· - Command customization based on individual user preferences.
· - Feedback system to confirm command execution.
· - Emergency alert system in case of user distress.
Non-Functional Requirements:
· - High accuracy in voice recognition.
· - User-friendly interface for setup and usage.
· - Secure storage of user preferences and data.
3. System Design
Architecture:
· - Client-server model with local processing for voice recognition and a backend for data management.
· - Integration with IoT devices for task execution.
Data Flow Diagrams (DFDs):
· - Level 0: Overview of data flow from voice input to task execution.
· - Level 1: Detailed processes for voice recognition, command mapping, and device control.
Database Design:
· - Tables: Users, Commands, Devices, Preferences.
4. Technology Stack
Frontend:
· - Mobile or web app for initial setup and command customization using React Native or Flutter.
Backend:
· - Python (Flask/Django) or Node.js for API development.
· - Integration with voice recognition APIs like Google Speech-to-Text or Amazon Alexa.
IoT Integration:
· - Use protocols like MQTT or Zigbee for device communication.
Database:
· - SQL (PostgreSQL, MySQL) or NoSQL (MongoDB, Firebase).
Cloud Services:
· - AWS, Google Cloud, or Azure for hosting and scalability.
5. Implementation
Voice Recognition:
· - Integrate voice processing APIs for accurate recognition and natural language understanding.
· - Support multiple languages and dialects.
Command Execution:
· - Develop modules for mapping voice commands to specific actions.
· - Integrate with smart devices for task automation.
User Preferences:
· - Enable customization of commands and device mappings.
· - Store preferences securely in the database.
Emergency Alert System:
· - Implement a feature to trigger alerts via voice commands or predefined keywords.
· - Notify caregivers or emergency services as needed.
6. Security
Encrypt sensitive user data during storage and transmission.
Ensure secure authentication and role-based access.
Regularly update the system to address vulnerabilities.
7. Testing
Unit Testing: Validate individual modules like voice recognition and device control.
Integration Testing: Ensure seamless communication between frontend, backend, and IoT devices.
System Testing: Test the system in real-world scenarios with diverse user groups.
Performance Testing: Evaluate system response times and accuracy under varying conditions.
8. Deployment
Deploy the system on cloud platforms for scalability and reliability.
Provide user manuals and training materials for setup and usage.
Set up monitoring tools for system performance tracking.
9. Maintenance and Updates
Monitor system logs and resolve issues promptly.
Regularly update the application with new features and security patches.
Incorporate user feedback to improve functionality and accessibility.
10. Appendix
Glossary of terms.
References and additional resources.