SYSTEM AND METHOD FOR VIBRATION-BASED ROTATIONAL SPEED MEASUREMENT
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United States of America Patent
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Issued Date -
Feb 29, 2024
app pub date -
Aug 15, 2023
filing date -
Aug 23, 2022
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Abstract
A device, system, and method are provided for providing vibration-based rotational speed measurements for rotating machinery. A sensor device is provided as a one-piece unit that is mechanically mounted to a pump. The sensor device includes a vibration sensor, a wireless communications interface for exchanging data with a user device, an internal battery, and a processor. The processor receives a measurement request from the user device, retrieves data samples from the vibration sensor, generates an acceleration spectrum based on the data samples, and detects peaks in the acceleration spectrum. The processor then selects, from the detected peaks, peaks corresponding to vibration at the rotational speed and its harmonics, calculates a rotational speed value based on a highest-frequency peak of the shaft frequency peak and its associated harmonic peaks, and sends the rotational speed value to the user device via the wireless communication interface.
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