Device for determining a trigger point on an electric signal with given amplitude distribution over time
US4467433A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1981 |
| Grant date | Aug 21, 1984 |
| Priority date | — |
| Expiry date | Jul 29, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/175
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The device comprises an evaluation unit and at least one transducer for feeding the electric signal to this unit on the occurrence of a characteristic event and the evaluation unit comprises a recognition unit sensing the occurence of the characteristic event. To permit determination of the trigger point characterizing the occurrence of the characteristic event also in the case of heavily noise-contaminated measuring signals the evaluation unit is provided with one or several comparators in addition to the recognition unit, whose thresholds are spaced out over a certain range of levels, and--depending on whether the transducer signal has reached the threshold of the recognition unit--by using the information contained in the evaluation unit, which is influenced by the sequence of the comparator responses according to the signal shape delivered by the transducer, for determination of the trigger point characterizing the occurence of the characteristic event, in a manner predetermined in the evaluation unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.