Ultrasonic object detection apparatus
US10371805B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 21, 2015 |
| Grant date | Aug 6, 2019 |
| Priority date | — |
| Expiry date | Jul 22, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An obstacle detection apparatus includes: a transceiver transmitting a transmission wave and receiving an ultrasonic wave; a transmission controller; a receiver circuit detecting a signal level of a receiving wave; a distance calculator sequentially calculating a distance to an object reflecting the transmission wave; a memory storing the distance to the object; an obstacle determination device determining whether the object is an obstacle; and a reception level monitoring device monitoring the signal level of the receiving wave before the transmission wave being transmitted. When the signal level exceeds a predetermined threshold, the obstacle determination device sets a first number of determination data elements to an increased number of determinations for a predetermined period to be used for determining whether the object is the obstacle, as being larger than a second number of determination data elements used when the signal level does not exceed the predetermined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.