Rearward obstruction sensing system for automotive vehicle
US4528563A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 24, 1983 |
| Grant date | Jul 9, 1985 |
| Priority date | — |
| Expiry date | Oct 24, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S367/909
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rearward obstruction sensing system for an automotive vehicle detects obstructions within plural warning areas defined near the vehicle body. Four speakers near the four corners of the passenger compartment face toward the allocated warning areas when seen from the driver. When an obstruction is detected within a warning area, the speaker disposed on the side of the warning area within which the detected obstruction exists produces an intermittent alarm sound. Therefore, the driver can intuitively or sensorially recognize the direction of an obstruction existing within dead angles from the driver without watching a zone display device while backing up his vehicle. Further, the driver can determine the obstruction distance by distinguishing the period of the intermittent alarm sound, because the period thereof is proportional to the obstruction distance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.