Mapped to a shared offline runtime family and usable with a recording or compatible ESP32 CSI stream.
Intended capability
Evaluate the sensing evidence for “Night-Shift Vitals Without Touch: Respiration + Heart-Proxy Trending” 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 C, 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
Chest wall displacement of 4-12mm at 0.1-0.5Hz phase-modulates CSI on paths intersecting the bed; cardiac ballistic motion (~0.5mm) leaves a weaker 0.8-2Hz component recoverable when the resident is motionless in bed. Rising resting respiratory rate is one of the earliest physiological markers of sepsis/pneumonia in the elderly — a pure slow-drift problem, which is exactly what CUSUM is built for.
02 Shared processing path
Motion-gated stillness windows via Doppler energy -> LD2410 breathing-presence hold per bed gates all rate and apnea-cluster claims (the radar reports static micro-motion energy, not an RR value) -> narrowband CSI spectral estimation in 0.1-0.5Hz and 0.8-2Hz bands when signal quality allows -> per-night median RR/HR-proxy -> compartment Kalman per resident + CUSUM over 3-14 days for decompensation drift; MVE flags acute apnea-cluster nights.
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
CSI-Bench / SenseFi respiration subsets for the 0.1-0.5Hz band; own-hardware overnight study vs. a contact respiration belt and pulse oximeter in 5 units; the 0.8-2Hz proxy specifically needs ECG-referenced validation (frontier).
04 Commercial hypothesis
For skilled-nursing medical directors: 'A vitals trend on every resident, every night, with nothing worn and no one woken' — the early-sepsis flag that cuts avoidable hospitalizations; requires one mmWave radar per monitored bed, which holds the breathing presence every claim rests on.