Mapped to a shared offline runtime family and usable with a recording or compatible ESP32 CSI stream.
Intended capability
Evaluate the sensing evidence for “Chassis Whisper — Drivetrain Vibration Fingerprinting” in a stationary, controlled, ground-truthed vehicle study. This is not a vehicle, occupant, child, pet, or driver-safety system.
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 Automotive scene
This is one recorded vertical scenario. It is not separate validation of every capability in the catalog.
01 The physics
Panel and component vibrations (5-40Hz and aliased harmonics) phase-modulate reflected paths; a worn bearing or failing mount changes the vibration spectrum imprinted on multipath. Machine-vs-human vibration discrimination is already proven, and each vehicle's healthy spectrum is a stable fingerprint at idle.
02 Shared processing path
Micro-Doppler spectral estimation 5-40Hz at controlled idle -> adaptive PCA healthy-vibration manifold per vehicle -> compartment Kalman + CUSUM on spectral-line drift over weeks of daily idle snapshots.
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: ESP32 mesh in 5 fleet vans, daily 60s idle capture for 90+ days, correlate spectral drift against maintenance records and reference accelerometer; induce a known fault (loose mount) as positive control.
04 Commercial hypothesis
Predictive maintenance from the WiFi you already installed for cargo sensing — sold to fleet maintenance directors as 'an accelerometer network for free'.