Metal detector with bivariate display
US5523690A · kind A · utility
25Cited by
8References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 24, 1992 |
| Grant date | Jun 4, 1996 |
| Priority date | — |
| Expiry date | Jul 24, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V3/107
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A metal detector having a receive signal responsive to detected metal objects and having a display panel that can simultaneously display a plurality of phase angles associated with the receive signal. Additionally, the display panel can simultaneously display a second variable associated with the receive signal at each particular phase angle. The second variable is user selectable and can be either (1) a count of the number of times the signal amplitude exceeds a predetermined threshold level at a particular phase angle or (2) the signal amplitude when the signal is at a particular phase angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.