Method for filtering digital signals in a pressure transmitter
US5381355A · kind A · utility
29Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1993 |
| Grant date | Jan 10, 1995 |
| Priority date | — |
| Expiry date | Dec 17, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L19/083
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for filtering digital signals in a pressure transmitter. The transmitter includes a microprocessor. In each operating cycle of the microprocessor included in the transmitter, the method determines if there are any noise spikes in the signal at the input to the microprocessor representative of pressure and provides rejection for such spikes. The method also provides for a faster response to a step change in pressure than is provided by conventional filtering methods and also dampens small fluctuations in the filtered output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.