Meter and meter driving system with indication fluctuation suppression and enhancement
US5218291A · kind A · utility
3Cited by
9References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1992 |
| Grant date | Jun 8, 1993 |
| Priority date | — |
| Expiry date | Feb 26, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R15/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A meter driving system receives pulse signals from a sensor, counting frequencies or periods of the input signals. The counted results are weight-averaged to determine an output value and a value to be indicated. In a weight-averaging process, a weight is varied in response to the frequencies of the input signal. Thus, the meter can give a precise indication regardless of varying input frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.