4. Fiber monitoring and diagnosis technology
Optical fiber monitoring is a direct from bearing rings surface of diagnosis technology of extracting signal. Optical fiber bundles with made of displacement sensor contains launch fiber bundle and receive fiber bundle. Light the launch fiber bundle sensors end face and bearing collar after the clearance between the surface reflected back from the receive fiber bundle receiving, by photoelectric element into electrical signal, through the analysis to electrical signal processing, can make an assessment of the bearing conditions.
Features: fiber optic displacement sensor sensitivity; Directly from the bearing surface extract signals, improve the signal-to-noise ratio (SNR); Can directly reflect the rolling bearing manufacturing quality, surface wear degree, load, lubrication and clearance.
Application: apply to can be installed in the bearing of the sensor in the machine.
5. Temperature diagnostic technique
Bearing if produce some unusual, bearing temperature will change. Therefore, in accordance with the temperature change can be on the bearing fault diagnosis, but for abnormal judgment is very low.
Features: diagnosis simple; On the bearing burns judge the effect is good.
Scope of application: it is used in the machine bearing simple routine diagnosis.
6. Acoustic emission diagnostic technique
Metal materials because of a wrong inside lattice vonbined or because the origin and development of the internal cracks, all need to release the elastic wave, this phenomenon is called acoustic emission phenomenon. The rolling bearing produce flake or crack, will produce different types of acoustic emission signal, accordingly can make an assessment of the bearing conditions.
Features: diagnosis quick and easy; Can be online monitoring.
Application: in recent years, the development of new technology, in working condition monitoring application in bearing less.
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