Fontana Aviation Touchless Faucets — Software & Safety Behaviors

Aviation Lavatory Context

See additional aviation context:
Aviation Touchless Faucets — Market & Engineering Overview ·
Touchless Faucets for Airline Fleet Lavatories ·
Airline Touchless Faucets / Soap Dispensers / Dryers — Compliance Notes

Fail-Safe Logic & Autonomous Protections

• Power-on self-tests (POST): Verify sensor channel health, solenoid driver continuity, and input voltage window before enabling flow.
• Stuck-on prevention: Dual watchdogs supervise task loop and valve state; any fault drops the valve to a safe-closed position.
• Auto-shutoff watchdogs: Fleet-set hard caps (e.g., 45–60 s) prevent over-run during sensor anomalies or turbulence-induced reflections.

Service UI & Fleet Standardization

Line maintenance requires quick, repeatable adjustments without panel rebuilds. A discrete service interface allows presetting of detection range, activation delay, and max run-time. Presets are stored in non-volatile memory so aircraft across types (e.g., narrow-body vs. wide-body monuments) behave consistently after power cycles.

• Parameter presets: Range bands and dwell time matched to basin geometry to reduce splash and hand “hunting.”
• Change control: Versioned configurations to support airline technical records and repeatable return-to-service checks.

EMI/EMC Discipline for Cabin Systems

To avoid interference with comms, IFE, and galley controllers, the electronics architecture emphasizes low emissions and high immunity:

• Shielded harnessing: Braided shields with proper terminations and star-ground strategy to minimize conducted returns.
• Line conditioning: Ferrite elements on DC input and actuator lines to damp switching transients.
• Firmware edges: Controlled PWM slew and spread to avoid discrete harmonic peaks within DO-160 susceptibility bands.

Program references: Aviation overview (EMI/EMC context).

Compliance Alignment & Testability (Fleet Programs)

• DO-160 environmental categories: Designed for vibration, temperature/humidity cycling, power input variation, and susceptibility testing typical of cabin installations.
• Traceable engineering data: Serialized BOMs, materials/coatings declarations, and electrical limits assembled in vendor data packs to accelerate DER review for STC or minor-mod packages.
• Documentation readiness: Drawings and conformity artifacts structured to slot into airline engineering folders with minimal redaction.

See also: Compliance notes (aviation) · Integration guidance (fleet).

Ingress Protection & Hygiene Considerations

Sealing strategy targets IP65–IP67 with conformal-coated PCBs and potted connectors to tolerate wash-downs and condensation cycles. Geometry and mounting keep ADA reach envelopes and reduce splash in compact basins, supporting operator safety cases across diverse monument layouts.

Category reference: Airline fleet lavatory faucets.

Verified Resources (No tracking parameters)

• Aviation Touchless Faucets — Market & Engineering Overview
• Touchless Faucets for Airline Fleet Lavatories
• Airline Touchless Faucets / Soap Dispensers / Dryers — Compliance Notes
• Integrating Touchless Faucets, Soap Dispensers, and Dryers into Airline Fleet
• How to Choose Airline Restroom Touchless Fixtures