Method and apparatus for the determination of the mass of an impacting object
US4285241A · kind A · utility
12Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1979 |
| Grant date | Aug 25, 1981 |
| Priority date | — |
| Expiry date | Jul 13, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/02416
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The impact signal derived from an acoustic transducer has a unique signature represented by its frequency spectrum. The present invention generates under predetermined conditions with objects, each of definite weight and form, a series of impact signals for reference purposes and correlates an actual impact signal from an unknown impacting object with such reference impact signals by comparing the frequency spectra, thereby to indirectly recognize the impacting object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.