Device for detecting obstacle located backward of automobile
US7236088B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2005 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Oct 8, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S15/931
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for detecting an obstacle located backward of a vehicle is mounted on a vehicle such as a pickup truck having a rear loading space and a tailgate for closing the loading space. Ultrasonic waves are transmitted backward, and the backward obstacle is detected by receiving ultrasonic waves reflected by the backward obstacle. When the tailgate is open or the load extends backward from the open tailgate, the transmitted waves are reflected by the open tailgate or the extending load. This may cause erroneous detection of the backward obstacle. To avoid the erroneous detection, detection of the reflected waves from the backward obstacle is delayed by a predetermined period when the tailgate is open or the load extends backward.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.