FOTRIC TD2e Acoustic Imaging Camera – See Sound – From ‘Inaudible’ to ‘Visible’

• High-density microphone array with 64 MEMS digital microphones
• Industrial digital camera: 5 MP, 58° × 45° field of view
• ≥ 3 hours of single-battery runtime, removable; Device rated IP54
• Detection distance: 0.3~60m

What is Acoustic Imaging?

Limitation of Human Perception – The human ear can only perceive sounds in the range of 20 Hz to 20 kHz. However, hidden faults such as gas leaks, bearing wear, and electrical discharges often emit much higher frequency ultrasound (>20 kHz) — sounds that are imperceptible to the human ear and beyond the capabilities of traditional stethoscopes or microphones.

How does it work?

Sound Wave Signals > Microphone Array > FPGA Beamforming Algorithm > Embedded Interactive Platform > Acoustic Image Generation

• Microphone Array: Simultaneously captures sound signals from multiple sources to enhance spatial accuracy.
• Beamforming Algorithm: Focuses on sound sources from specific directions, filtering out environmental noise.
• Acoustic Image Overlay: Displays sound source locations as a heatmap over the image.
• Low-Latency Rendering Engine: Enables near-instant response, ideal for continuous inspection scenarios.

Beyond What’s Audible

The FOTRIC TD2e acoustic imaging camera can detect not only audible sound, but also high-frequency ultrasonic signals that are beyond the range of human hearing.

This means it can easily capture things like:

Compressed Air System Leaks

As gas leaks emit high-frequency turbulence noise, the TD2e can quickly detect even the smallest leaks in compressed air pipelines.

Vacuum System Leaks

The TD2e precisely captures subtle leak sounds in vacuum systems that human ears cannot hear, enabling fast leak localisation without contact or damage to equipment.

Loose Joint Vibration During Operation

The TD2e detects abnormally high-frequency sounds caused by loose screws while the equipment is running. It visualises and pinpoints the issue in real time without requiring a shutdown.

Pneumatic Valve Leakage Detection

As pneumatic valves, cylinders, and fittings in automated production lines age, they frequently generate high-frequency leakage noise. The TD2e captures real-time ultrasonic leakage signals from valve bodies and fittings, providing visual localisation to pinpoint leak sources quickly.