Pulse height analyzer for spectroscopy thermal multigate decay well logging system
US5055675A · kind A · utility
4Cited by
6References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 8, 1990 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | Jun 8, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V5/045
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pulse height analyzer for spectrocopy thermal multigate decay well logging systems is disclosed and has an input section comprising a peak time determining circuit locating a peak occurrence. The peak is determined relative to a threshold voltage determining circuit. On peak detection, a timing signal is formed for a control circuit. This operates a sample and hold switch at the output of an amplifier for the input. This switch inputs to an A/D converter driving a buffer. Various handshake signals cooperate with a telemetry system to transfer the peak time A/D valve for pulse height measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.