Hospitality & Retail Physics limit

PourSure

KegSight — cellar keg and syrup fill-level sensing

Steel kegs shield their insides from the signal completely — physics says no.

Read the physics limit Open explanatory blueprint See how it works

Readiness Physics limit

Retained for transparency, but blocked from execution because the catalog physics review rejected it.

Evidence Unvalidated concept

An early research proposal with no capability-specific product validation yet.

Runtime family Not mapped

No browser runtime is assigned to this capability yet.

Why live sensing is unavailable

Steel kegs are a Faraday enclosure — external CSI cannot read internal liquid level, and 'external resonance of the liquid-loaded shell' is not a real commodity-CSI observable. Only bag-in-box/plastic vessels are viable, not the flagship steel keg.

Intended capability

Document why this proposed outcome is blocked by the reviewed physics: Continuous fill-level estimation for beer kegs, bag-in-box syrup, and CO2/water tanks in the bar cellar, flagging 'will blow mid-shift' before Friday night.

This describes the intended outcome. Readiness is physics limit, 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.

Physics limit

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

Liquid (eps_r~80) versus headspace gas (eps_r~1) inside a container radically changes how paths reflect, refract, and delay around/through it; as level drops, specific CIR taps shift delay and amplitude because the effective dielectric boundary inside the propagation volume moves. Bag-in-box and plastic vessels are directly visible; steel kegs are read via the changing external scattering geometry and resonance of the liquid-loaded shell.

02 Shared processing path

CIR sparse recovery of per-tap delays around the rack -> RFF/NeRF eps_r volumetric map of the cellar with per-vessel voxels -> compartment Kalman per keg tracking monotonic drain dynamics + CUSUM on refill events.

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 controlled drain experiment: two ESP32 nodes flanking a keg/bag-in-box, stepwise 5% level changes, blind level regression; no public dataset exists — this is the experiment.

04 Commercial hypothesis

Never-blow-a-keg cellar telemetry with zero flow-meter plumbing — for the bar owner and the brewery's field sales rep who wants pull-through data.