Electric motor monitoring system
First Claim
1. An electric motor monitoring system comprising an antenna, a data sampling means and a data processing means characterised in that the antenna provides means for detecting a radio-frequency signal generated by arcing events from a brush contact of the electric motor, and provides a diagnostic for monitoring the operation of both mechanical and electrical components of the electric motor.
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Accused Products
Abstract
An electric motor monitoring system is described that comprises an antenna, a data sampling means and a data processing means. The system employs the antenna to detect high frequency arcing events within the electric motor that can thereafter be mapped so as to provide a means for motoring, recording and diagnosing a variety of electric motor operating and fault conditions. The antenna design allows for the suppression of background electrical noise so improving the signal to noise ratio of the detected signals. The same system also provides a facility for optimising the alignment, and monitoring the efficiency of, the electrical and mechanical components of the electric motor.
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Citations
28 Claims
- 1. An electric motor monitoring system comprising an antenna, a data sampling means and a data processing means characterised in that the antenna provides means for detecting a radio-frequency signal generated by arcing events from a brush contact of the electric motor, and provides a diagnostic for monitoring the operation of both mechanical and electrical components of the electric motor.
- 10. An antenna for measuring high frequency radio frequency signals associated with arcing events from a brush contact in an electric motor, the antenna comprising a loop and a loop screen, wherein the loop screen shields the loop from background noise thus improving the signal to noise ratio of the signal detected by the antenna.
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15. A diagnostic method for monitoring the operation of both mechanical and electrical components associated with an electric motor, the method comprising the steps of:
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i) Detecting high frequency radio frequency signals associated with arcing events from a brush contact within the electric motor;
ii) Sampling the high frequency signal over a predetermined length of time;
iii) Processing the sampled data so as to provide information regarding the mechanical and electrical components of the electric motor. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification