Physical object detection system
US8248887B2 · kind B2 · utility
3Cited by
1References
9Claims
0Family size
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Key dates
| Filing date | Feb 12, 2010 |
| Grant date | Aug 21, 2012 |
| Priority date | — |
| Expiry date | Dec 3, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2015/939
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In an obstacle detection system, a wave transmitted by a transmitting element and received by receiving elements as a receiving wave includes extraneous waves, which are reflection waves from other than an obstacle, and obstacle reflection waves from an obstacle. It is determined that, an obstacle is present, if the reflection waves are detected as having an amplitude (voltage) greater than a threshold level and a reception time difference between time points at which the amplitude exceeds threshold level at the receiving elements is less than a predetermined time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.