Portable, self-contained data collection systems and methods
US6411921B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1998 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Sep 14, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H1/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A portable self-contained data collection system for measuring and collecting vibration data from machines includes an accelerometer which is coupled to the analog input of a data acquisition card. The data acquisition card samples and digitizes the analog signal to produce a time domain digital signal. The data acquisition card output is coupled to a battery-powered portable computer. The battery-powered portable computer includes a database having machine identifications and associated measurement parameters. The portable computer processes the time domain digital signal according to the measurement parameters associated with a selected machine identification, and produces a frequency domain digital signal by performing a Fast Fourier Transform and other digital signal processing operations. The frequency domain signal is also analyzed in the portable computer to produce predictive maintenance information. A power supply for supplying power to the accelerometer is also included.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.