Ultrasonic object detector
US7518491B2 · kind B2 · utility
9Cited by
8References
15Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 26, 2006 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | Apr 22, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2015/938
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An object detector capable of reliably detecting objects around a vehicle is mounted on a wall of a bumper of a vehicle. Thicknesses of the bumper and of a bottom surface portion of a housing are less than one-half the wavelength of ultrasonic waves generated by a piezoelectric vibrator. This suppresses the reflection of ultrasonic waves by the bumper and by the bottom surface portion of the housing, and enhances the ultrasonic wave propagation efficiency, making it possible to reliably detect objects positioned around the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.