RotoSense™ Advanced Rotational Vibration Sensor

Ridgetop Wireless Vibration Sensor V2 ROTOSENSERidgetop Group’s RotoSense advanced rotational vibration sensor (RVS) enables easy extraction of high-resolution acoustic signatures from rotating components in harsh environments. RotoSense is included in the Sentinel Motion™ product line of advanced diagnostic and prognostic tools, and is an integral part of the RailSafe™ Integrity Analysis System.

Ridgetop’s innovative Internet of Things (IoT)-compatible RotoSense wireless instrument helps engineers perform dynamic analysis of rotating interaction and develop improved designs for rotating components. RotoSense is available in different packages for a range of applications. In addition, data from this instrument can be used with Sentinel Motion algorithms that detect and predict faults based on external acoustic signatures, for prognostic purposes. The result is an improvement in safety, performance, and maintenance costs for future generations of rotating components.

00688a RotoSense system diagram-01

Complete sensor assembly, end point; circuit board diameter is 1.2 in. (3 cm)

RailSafe RotoSense sensor module (blue) mounted on train axle hub

RailSafe RotoSense sensor module (blue) mounted on train axle hub

The RotoSense wireless rotation sensors have been installed and tested inside a Bell OH-58 helicopter gearbox spinning at 5,500 RPM. A paper jointly authored by NASA and Ridgetop Group details the impressive results. RotoSense has also been tested on the Transportation Technology Center, Inc. (TTCI) test track in Pueblo, Colorado.

RotoSense Testing

RotoSense graphical user interface – Data collection

Data are logged and compared in real time between the local testbed and a remotely located wireless gateway with precise results.

Applications

  • Sensing gear tooth wear, chatter, or spindle balance in computer numerical control (CNC) applications
  • Real-time monitoring of downhole drill vibration in oil and gas exploration applications
  • Detecting vibrational signatures in rotating shafts or pinions to give early warning of gear tooth cracking or spalling in wind turbines and transmissions
  • Sensing wheel cracks, friction, and wear in train applications

RotoSense development kits are available from Ridgetop.

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In-situ Sensors for Product Reliability Monitoring
The advantages of predicting reliability include providing advance warning signs of failure as well as reducing the life cycle costs through the reduction of inspections and unscheduled maintenance of critical equipment. However, predictions can be inaccurate if they do not account for the actual environments that the product is subjected to in its life cycle, so Ridgetop has developed an in-situ sensor (prognostic monitor) approach which can be used to estimate the accumulated damage and the RUL of semiconductor devices.

Links to IEEE and AutoTestCon conference presentations on this subject can be found in our Resource Library

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