TunnelGuard — Alexa Tunnel Convergence Monitor

About this project

Alexa-integrated laser distance sensor network monitoring tunnel wall convergence (inward movement) in real time. Deploy 8 VL53L1X TOFLIDAR sensors around tunnel perimeter to measure distance to walls every second, detect asymmetric convergence patterns indicating lining instability, and voice-alert via Alexa when deformation rate exceeds 5mm/day. Perfect for metro/highway tunnel construction, deep underground mining, TBM breakthrough zones, and long-term structural health monitoring post-excavation.

What you get

• Complete, commented source code
• Full components list with quantities
• Pin-by-pin wiring guide and connection table
• Step-by-step upload and testing guide
• Project report (.docx, IEEE style)
• Presentation slides (.pptx)