Ultrasonic sensor and vehicle control system
US10585191B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 30, 2018 |
| Grant date | Mar 10, 2020 |
| Priority date | — |
| Expiry date | Nov 30, 2038 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/531
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasonic sensor in the invention includes an ultrasonic transmitter, an ultrasonic receiver, and a detector. The ultrasonic transmitter transmits pulse-shaped ultrasonic waves to a thin plate to excite the thin plate. The ultrasonic receiver receives direct waves and reflected waves among the ultrasonic waves propagating in the thin plate excited by the pulse-shaped ultrasonic waves, the direct waves propagating only in the thin plate, and the reflected waves radiating outward, then reflected by the object, and returning to the thin plate. The detector detects the object present near the thin plate on the basis of a difference between a time at which the ultrasonic receiver receives the direct waves and a time at which the ultrasonic receiver receives the reflected waves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.