Devices, systems and processes for ultra-short range detection of obstacles
US11520027B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2020 |
| Grant date | Dec 6, 2022 |
| Priority date | — |
| Expiry date | Jun 11, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2015/937
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Embodiments include devices, system and processes for facilitating ultra-short range detection of obstacles using a PAS sensor. A process may include obtaining a correlation of at least two characteristics of a transducer; determining a given transmission frequency and selecting a reverberation time desired for the transducer; obtaining a damping ratio corresponding to the selected reverberation time; generating a ranging signal command; generating a damping signal command; and outputting each of the ranging signal command and the damping signal command. The ranging signal command may instruct a PAS sensor to drive the transducer to output a ranging signal at the given transmission frequency, at a transmission amplitude, and at a transmission phase and the damping signal command results in a dampening, at the damping ratio, of transducer reverberations arising from the ranging signal. The damping ratio may be between thirty percent (30%) and eighty percent (80%) of the transmission amplitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.