Mapped to a shared offline runtime family and usable with a recording or compatible ESP32 CSI stream.
Intended capability
Evaluate the sensing evidence for “Silent Bathroom Event Guardian” in a consented study using staged events and independent reference observations. This is not a care decision, fall prediction, emergency response, or proof of resident safety.
This describes the intended outcome. Readiness is shared-family mapped, evidence is class A, and a catalog mapping or recording is not proof of this outcome at a real site.
Solution blueprint
See the environment before installing it.
This exact kit is one of 191 first-class designs. It includes geometry, objects, nodes, wording, scenarios, installation, limitations, and catalog-bound readiness.
No rendered revision is available yet.
Bundled recording
A related Elderly scene
This is one recorded vertical scenario. It is not separate validation of every capability in the catalog.
01 The physics
A fall produces a high-magnitude broadband Doppler transient (rapid limb/torso velocity >2 m/s) followed by near-zero motion energy. Through-wall fall sensing works because 2.4/5GHz penetrates drywall (proven AUC 0.69 LOS/NLOS discrimination, fall AUC 0.8); the stationary 'alive but down' hold does not — drywall blocks 24 GHz, so breathing-band micro-motion is read by an in-room mmWave radar whose aimed cone holds a still person as a static target.
02 Shared processing path
Doppler transient detector (fall template, through-wall CSI) -> RTI differential imaging to confirm location = bathroom -> in-room LD2410 static-target energy for the 'alive but down' breathing hold -> MVE anomaly score on dwell-time-without-motion vs. resident's own bathroom-visit baseline.
This is a capability design path. Components may be shared with other catalog entries; it is not presented as a unique algorithm.
03 Validation plan
Fall detection already class-A on public data; EHUNAM and ESP32-wall for through-wall configuration; own-hardware validation with staged falls (mannequin + actor protocol) behind a real bathroom wall.
04 Commercial hypothesis
For home-care agencies and adult children (private-pay): 'The bathroom is where they fall and where cameras can never go.' The fall is caught through the wall; the went-still watch is a small mmWave radar inside the room — plus tier — sensing breathing, never pictures.