Method and apparatus for characterizing reflected ultrasonic pulses
US5031627A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1989 |
| Grant date | Jul 16, 1991 |
| Priority date | — |
| Expiry date | Oct 17, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/529
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention is a method of and apparatus for characterizing the amplitudes of a sequence of reflected pulses R.sub.1, R.sub.2, and R.sub.3 by converting them into corresponding electrical signals E.sub.1, E.sub.2, and E.sub.3 and thereafter exponentially adjusting the amplitudes of the respective signals E.sub.1, E.sub.2, and E.sub.3 to substantially the same value during each sequence thereby restoring the reflected pulses R.sub.1, R.sub.2, and R.sub.3 to their initial reflection values by means of timing means 12 and 13, an exponential generator 17 and a time gain compensator 18. Envelope and baseline reject circuits 23 and 24 respectively permit the display and accurate location of the time spaced sequence of electric signals having substantially the same amplitude on a measurement scale on a suitable video display or oscilloscope 14.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.