Motion direction detection
US5170162A · kind A · utility
11Cited by
11References
25Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 31, 1990 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Jul 31, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/056
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The direction of motion of objects is sampled to determine, in a manner in which substantially avoids false alarms, whether there is object motion in a direction of interest. Systems employing such sampling methodology generate a warning signal in response to a vehicular traffic condition of interest and include at least a pair of motion detectors. Each motion detector processes motion information bearing signals to determine distance traveled in a predetermined time period to minimize false alarms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.