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 “Triage Seat Respiration Screen” in a consented, ground-truthed study. This is not a medical device, clinical monitor, diagnosis, or emergency alert.
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 Healthcare scene
This is one recorded vertical scenario. It is not separate validation of every capability in the catalog.
01 The physics
A still seated adult's 4-12mm chest displacement modulates a well-placed link measurably (class-A breathing detection proven); fixing the seat and planning the link geometry against the Fresnel zone model removes the placement variance that makes ad-hoc breathing sensing flaky.
02 Shared processing path
Fresnel placement scoring fixes seat/node geometry at install -> occupancy gate (seat occupied, subject still) -> breathing estimator (0.1-0.5Hz zero-crossing, subcarrier variance weighting) -> RR band (normal / elevated / low / unavailable) with explicit refusal below signal quality.
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
Own-hardware seat vs nurse-counted RR and a reference belt across 100 consented sits; report MAE, refusal rate, and the placement-score threshold below which refusal dominates. Explicit non-medical-device framing.
04 Commercial hypothesis
For the charge nurse: 'A respiration flag on every waiting patient — from the chair, not a clip-on.'