BLY-SOACS-1-XXX · Fiber-optic acoustic signature sensor

Acquires baseline operating sound, impacts and friction signatures to support structural-anomaly assessment.

Fiber-Optic Silicon Photonic Microphone Sensor

Fiber-Optic Silicon Photonic Microphone Sensor

Product overview

Uses silicon photonic reflective pulse coding and optical transmission to acquire operating sounds, impacts, friction, leakage and abnormal acoustic signatures. An analysis platform provides feature extraction, recognition and predictive maintenance. The head shares a similar mechanical, mounting and pigtail platform with the accelerometer version.

Acoustic response spans 20 Hz–20 kHz, with 1 Hz frequency resolution, typical A-weighted SNR ≥65 dB and acoustic overload point ≥115 dB SPL. These specifications require compatible interrogation, sampling and analysis windows.

Typical applications

Power: transformers, generators, wind turbines, substations and storage; petrochemicals: refining, compressors, tanks, pipelines and terminals; mining: underground equipment, conveyors, transfer stations, pumps and galleries; infrastructure: railways, bridges, tunnels, utility corridors and slopes.

Technical specifications

Interfaces and installation

Configuration example: BLY-SOACS-1-025. Pigtail length and connector follow the ordered configuration.

Bond with Ergo1665 on a clean, flat surface; align and secure the head as required and protect the pigtail. Minimum bend radius is 50 mm for both protected and unprotected versions. Place near the source or structural point and avoid loose mounting or unnecessary impacts.

For lengths beyond the standard 3 m pigtail, extend using compatible fiber splicing. Qualified personnel should handle connector removal, splicing and protection in accordance with the optical design. Total loss and length must meet interrogator requirements; connectors and pigtail lengths are configurable.

Use with a BLY silicon photonic interrogator and host acoustic-analysis platform. Acoustic recognition depends on sensor placement, source distance, background noise, the monitored structure and model training.

Sensor response, interrogator scan rate and interface output rate are separate specifications. Raw 2 kHz or 20 kHz waveforms require sufficient sampling and transport bandwidth. A ≥50 Hz status output does not establish these raw-waveform capabilities; confirm the required high-speed acquisition mode.

Apply ingress, corrosion and overload ratings under the test conditions for the supplied configuration. Passive-fiber electrical isolation does not replace complete-system suitability verification for hazardous areas.

Applications and further reading

• Multi-hazard fiber sensing and rescue-support localization in underground coal mines
• Multi-parameter fiber monitoring for substation GIL, busbars and transformers
• Fiber sensing for cable temperature and equipment condition across steel production
• Fiber sensing for photovoltaic plants, charging facilities and distributed energy

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