Development of wireless vibration transducer based on MEMS accelerometer
DOI:
https://doi.org/10.15587/1729-4061.2016.71954Keywords:
vibration, MEMS accelerometer, wireless vibration transducer, Wi-Fi, monitoring of rotating machineryAbstract
When monitoring the vibration of heavy rotating machinery, one often has problems with cables of vibration transducers, as those cables are usually long, heavy and prone to damage. This paper is focused on the development of a wireless vibration transducer, based on the MEMS accelerometer, which is free of those problems. Owing to the schematics proposed, developed sensor’s power consumption is low, at that analog filtering of vibration acceleration signal is provided. In the paper, spectral analysis based method of frequency response correction is also proposed. That method can be used for measurement of the vibration RMS and power spectra, while using an MCU with low computational power for data processing. The results of the tests conducted show that the transducer developed is well-behaved and that its precision is comparable to one of industrial piezoelectric transducers. So, the transducer developed can be used instead of the industrial transducers mentioned; at that, moving of the machine condition detection process from the high–level system to the transducer level allows one to decrease network traffic and simplify monitoring system as a whole.
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