All capabilities
Industrial & Energy Physics limit

HissTrace

Pressurized Gas Leak Detection by Jet Vibration

People wish WiFi could hear a small gas leak hissing from a flange.

Readiness Physics limit

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

Evidence Frontier Unvalidated concept

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

Runtime family Machine vibration

Spectral energy and drift tracking for repeatable machine vibration signatures.

Why live sensing is unavailable

Both claimed observables fail: turbulent-plume RF refractive-index scintillation is negligible at cm wavelengths (air density fluctuations give sub-0.1 degree phase over indoor paths, unlike optical/IR), and small-leak (0.5-3mm orifice) jet energy is predominantly ultrasonic, not in the 0.1-40Hz structural band. Below noise floor.

Intended capability

Document why this proposed outcome is blocked by the reviewed physics: Detection and coarse localization of compressed gas / steam leaks from flanges and fittings — continuously, plant-wide, without ultrasonic survey rounds.

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 Industrial scene

This is one recorded vertical scenario. It is not separate validation of every capability in the catalog.

01 The physics

A high-pressure leak does two physical things in-band: the escaping jet drives broadband mechanical vibration of the pipe/flange (turbulence-induced, with substantial energy below 40Hz reaching the microphone-free micro-Doppler channel), and the turbulent plume creates a fluctuating refractive-index volume that scintillates any RF path crossing it (fast, non-periodic amplitude jitter distinct from human/machine Doppler). Steam plumes add a strong eps_r contrast from water vapor condensation.

02 Shared processing path

Micro-Doppler broadband vibration + path amplitude scintillation statistics (stage 2) -> anomaly manifold trained on the healthy acoustic/scintillation baseline of each pipe rack (stage 3) -> RTI differential imaging to localize which bay the disturbance sits in (stage 4).

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: compressed-air rig venting through calibrated orifices (0.5-3mm) at 2-8 bar between ESP32 nodes; ROC vs leak rate, plume-crossing vs pipe-vibration path ablation; steam test at a boiler blowdown.

04 Commercial hypothesis

24/7 leak watch on every pipe rack for the price of one ultrasonic survey — sold to the process safety lead as 'LDAR that never goes home.'