Digital programmable timing device
US4181962A · kind A · utility
18Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1978 |
| Grant date | Jan 1, 1980 |
| Priority date | — |
| Expiry date | Feb 27, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P3/486
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A digital programmable timing device to control the acquisition of data by a computer from high response probes in periodic flows. Synchronized sampling of probe measurements uses a phase-locked-loop and counting circuits so that the moment of A/D conversion always corresponds to a programmable displacement of a stationary probe with respect to moving rotor blades independent of RPM. The rotor speed also is measured digitally in one revolution of the rotor shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.