Flutter Mobile Layer
The companion app is built with Flutter to deliver cross-platform role-based flows for Patient, Caregiver, and Doctor users.
System Architecture
Layered Safety Architecture
The system combines a Flutter mobile app, Flask backend services, and AWS cloud infrastructure to keep the wearable experience lightweight while the heavy work happens remotely.
Flutter
Flask
AWSArchitecture Layers
Flask Backend Services
Core APIs are implemented with Flask for authentication, profile management, AI endpoint routing, and secure token-based access.
AWS Cloud Layer
AWS powers compute, storage, and database services using EC2, S3, and RDS to handle heavy processing reliably at scale.
Layered Safety Architecture
Layer 1: Edge Perception
Raspberry Pi + camera capture real-time visual context and send only the required data stream for processing.
Layer 2: AI Inference
Face recognition and medicine/object detection execute in controlled modes to maintain low latency and stable response.
Layer 3: Safety Intelligence
Role-based chatbot and clinical support logic enrich raw detections into safe, understandable guidance.
Layer 4: Secure Backend
Flask APIs with JWT validation, rate limiting, and standardized error handling enforce reliable operations.
Layer 5: Cloud Reliability
AWS EC2, S3, and RDS ensure model availability, scalable processing, and persistent medical data integrity.
Layer 6: Continuous Learning
Retraining pipelines ingest new faces from mobile uploads and hot-update active models without downtime.
Flow Visualization
Edge Capture
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AI Inference
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Safety Logic
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Flask API
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AWS Cloud
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OLED Output
Computer Vision Processing
Real-time image processing from AR glasses: face recognition via SVM, object detection via YOLOv8, with immediate OLED output.
Voice Chat & Diagnosis
Multimodal RAG system with Gemini: patient questions, STT/TTS, database context, and ResNet50 MRI analysis for doctors.
Machine Learning Retraining
Caregiver uploads images to S3, the training server refreshes the SVM model, and the main API hot reloads the latest version.
Identity & Access Management
JWT-based stateless auth with token blacklist, password signature validation, and role-based access control.