Each node sits on the conveyor stringer and picks up bearings through the steel frame, not through the air. Four measurements span the failure curve from the first friction changes through to heat.
Each node takes four measurements that together span the curve from the first friction changes through to heat.
Earliest mechanical evidence of distress.
Confirms a defect big enough to move the frame.
What the fitter will hear when they get there.
Late on the curve; counted only alongside another signal.
A distressed bearing produces ultrasonic stress waves before the defect is large enough to move the frame.
Belt, drive, loading and wind put most of their energy at lower frequencies, so a small bearing signal stands out on a noisy belt.
Ultrasonic signal fades quickly through steel, so a node hears mainly the frames around it. A flag points to a zone, not a stretch of conveyor.
Ultrasonic can also move for reasons that go nowhere, such as a short-lived change in lubrication, load or water ingress. That is why it is never read alone.
One cable carries power and data from every node on the section to a controller at the end. The controller stores every waveform locally and sends results over LTE-M to a server in Australia set up for each client. No connection to site IT or OT.
Raw recordings stay on the controller. Results and grading go to your server.
