Collision avoidance alarm system
US4872051A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 1, 1987 |
| Grant date | Oct 3, 1989 |
| Priority date | — |
| Expiry date | Oct 1, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/255
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The following invention is a passive collision avoidance alarm system. An optical sensor (which may optionally be visable, infrared or ultraviolet) is disposed to provide a continuous raster scan of the scene within a wide angle of the direction of travel of the vehicle. This sensor output is converted into digital data and stored. A computer system compares consecutive scenes to detect identifiable objects. For such identifiable objects the computer calculates the centroid of the object and its angle, and a measure of the size or extent of the object. Detection of an object having a constant angle and a increasing measure of extent causes an alarm to be triggered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.