Method for detecting traffic infractions in a traffic light zone through rear end measurement by a radar device
US9341711B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 14, 2014 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | Jan 22, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/0175
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for detecting a traffic violation in a traffic light zone through rear end measurement by a FMCW radar device (1). A specific position (sP1) assigned to the front of a vehicle (3) and the radial velocity are derived from the measurement signal obtained at a first measurement time (t1), and a first anticipated position (eP1) for the front of the vehicle is calculated by the distance-time rule at the second measurement time (t2) by means of the time period between the first measurement time (t1) and the second measurement time (t2). Through repeated calculation of an anticipated position for the front of the vehicle at further measurement times, an anticipated time when the front of the vehicle crosses a stop line (5) defining the traffic light zone is predicted iteratively with the determined vehicle velocity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.