A frontier proposal with a validation plan, not an implemented detector.
Intended capability
Research whether the field could support this proposed outcome: Per-zone equipment utilization for gym floors: is the treadmill row in use, at what cadence band, how long are strength stations occupied — capacity truth without cameras over members.
This describes the intended outcome. Readiness is research concept, 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 Hospitality scene
This is one recorded vertical scenario. It is not separate validation of every capability in the catalog.
01 The physics
Treadmill running imprints a strong 2.5-3.5Hz cadence comb plus belt-machine narrowband lines; strength work produces repetitive 0.3-1Hz burst trains; idle zones show only ambient. Zone attribution follows which links' Fresnel volumes each station sits in.
02 Shared processing path
Edge Doppler summary per link -> per-zone cadence-band occupancy classifier (running comb / lifting bursts / idle) -> station-level utilization ledger + peak-hour capacity report.
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 on one gym floor vs staff observation sheets for 2 weeks; report per-zone utilization accuracy and cross-zone bleed at adjacent stations.
04 Commercial hypothesis
For the operator: 'Right-size the floor with real usage rhythms — no member-facing cameras.'