Self-diagnostics of piezoelectric transducers

Self-diagnostics of a system for diagnostics and monitoring (hereinafter - SDM) of hazardous production facilities ensures minimal cost of such system’s operation, metrological reliability and availability factor [1-7]. Modern SDM comprising software-hardware complexes having combination of self-diagnostic methods which decreases their reliability. The paper considers a hardware method of a SDM’s vibration measuring channel end-to-end self-diagnostics from the sensor’s sensing element to the display.

The suggested method is based on producing a test signal to the sensor circuit and its further analysis by software-hardware means [2, 5], was utilized, particularly, in development of SDM for petrochemical units.

The paper considers an approach to reliability increase of a condition monitroing system  with a piezo-sensor by means of condition control for measuring-transducing channel using self-diagnostics. The paper considers selection of the most efficient parameters for self-diagnostic circuit. The results of the practical experience are presented.

References:

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3. Kostyukov, V., Bojchenko, S., Kostyukov, A.,“Automated control systems for safe resource-saving operation of equipment at refining and petrochemical plants (ACS SRSTM –COMPACS^®)”, Moscow, Mashinostroenie, ISBN: 5-217-02971-4, 163 p, 1999.
4. Kostyukov, V., “Monitoring of Industrial Safety”, Moscow, Mashinostroenie, ISBN: 5-217-03151-4, 212 p, 2002.
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Kostyukov V.N., Kostyukov Al.V. Self-diagnostics of piezoelectric transducers // The 11th International Symposium on Measurement Technology and Intelligent Instruments (ISMTII 2013)

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