The evidence is proven or strong, but this capability still needs a capability-specific ESP32 or Rust runtime adapter.
Intended capability
Evaluate the sensing evidence for “Pressure-Injury Repositioning Compliance (Too Still, Too Long)” 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 needs edge adapter, 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
Spontaneous repositioning produces brief 1-10Hz Doppler bursts with in-bed spatial signature; staff-assisted turns show a two-person occupancy event (occupancy count r=0.9, proven) coinciding with high in-bed motion. Absence of any burst beyond the 2-hour turn protocol is directly measurable as a null in the bed-path Doppler channel, while the mmWave radar's static-target energy at bed range holds the occupied-and-still state — breathing micro-motion keeps returning from a motionless resident, where an empty bed returns nothing.
02 Shared processing path
LD2410 static-presence hold confirms an occupied-and-still bed -> Doppler burst detection and classification (self vs. assisted via simultaneous occupancy count, CSI) -> inter-movement intervals counted against the radar-confirmed occupied hold -> CUSUM on protocol adherence rate per shift/per wing.
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
Presence and occupancy counting already class-A; own-hardware study vs. pressure-mat ground truth over 30 nights in 5 beds; CSI-Bench in-bed motion segments for burst detector tuning.
04 Commercial hypothesis
For directors of nursing facing CMS F-686 pressure-ulcer citations: 'Auditable, automatic proof that every 2-hour turn actually happened — per bed, per shift, no extra hardware in the bed.' Enterprise tier: the bed-aimed mmWave radar lives on the wall or ceiling, never in the bed.