Mapped to a shared offline runtime family and usable with a recording or compatible ESP32 CSI stream.
Intended capability
Evaluate the sensing evidence for “Sundowning & Nocturnal Wandering Radar for Memory Care” 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 B, 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 moving body is a strong differential scatterer: RTI attenuation images localize the resident to ~0.5-1m through interior walls, and repetitive pacing produces a distinctive periodic occupancy pattern plus sustained low-frequency Doppler energy. Circadian disruption changes the time-of-day distribution of motion energy, which is directly observable without any interpretation of identity or appearance.
02 Shared processing path
RTI differential imaging for trajectory extraction -> Doppler energy histogram binned by hour -> adaptive PCA + MVE with a per-resident 24h rolling baseline -> compartment Kalman on nightly activity-onset phase + CUSUM over 1-2 weeks to detect circadian phase drift (a documented sundowning precursor).
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
WiMANS multi-person activity data for trajectory/activity separation; ESP32-wall dataset for through-wall tracking fidelity; own-hardware pilot in one memory-care wing against staff incident logs and door-alarm events.
04 Commercial hypothesis
For memory-care directors of nursing: 'Know a resident is trending toward elopement days before they reach the door' — night-shift wandering heatmaps and drift alerts from the WiFi already in the walls.