Industrial · Strong theory
Confined-Space & Restricted-Zone Occupancy Ledger
Always knows how many people are inside a confined space — checked against the permit.
The physics is solid; our own validation is scheduled.
How it works
Every person inside the boundary stirs the WiFi field with movement and breathing, and more people means more stirring. The sensing nodes sit safely outside the hazardous space, reading through the wall. The live headcount is reconciled with the entry permit at all times.
In the physics: Each human body inside the space perturbs multipath with breathing (0.1-0.5Hz) and motion Doppler; occupancy count correlates with aggregate perturbation energy and mode count. Through-wall sensing (LOS/NLOS discrimination proven) lets nodes sit outside the hazardous boundary.
See it work
This is real pipeline output for Industrial, replayed. The exact reading depends on your room.
Go deeper
How the field becomes an answer
How we prove it
WiMANS multi-person counting and OPERAnet occupancy for the count model; ESP32-wall for the through-boundary configuration; own-hardware drill in a real vessel/electrical room during a planned entry.
Who it is for
A live 'souls inside' counter for every confined-space permit — sold to the permit-to-work coordinator as automated attendant backup.
runtime Runs today in LatentField 2.0 as occupancy_estimate
The matching solution
Complete first-room estimateMachine Bay Watch6 nodes · ~$320 parts · 120 min Request kit, subscribe, or set up →Compatible DIY hardware options
120 min · advanced
240 min · installer