| 摘要 |
The invention is directed to a method and an arrangement for detecting a traffic violation in a traffic light zone through rear end measurement by a FMCW radar device. For this purpose, a vehicle driving through a radar beam of a FMCW radar device, whose first outer edge beam horizontally forms an obtuse angle with the roadway edge, is measured at its front end, flank and rear end. The vehicle length is determined from the obtained measurement signals and added to the specific radial distance of the vehicle, which is determined close to a stop line through the vehicle rear, and a prediction is made based on the vehicle speed about the vehicle front driving over the stop line. |
| 主权项 |
1. A method for detecting traffic violations by a vehicle in a traffic light zone comprising,
deriving a measurement time-dependent specific position value and speed of the vehicle by measurement of a rear end of said vehicle at a plurality of measurement times from measurement signals caused by reflection from said vehicle when driving through an observation zone covered by radar radiation, determining whether or not a stop line lying within the observation zone and associated with a traffic signal installation was driven over by the vehicle outside of a green-light phase of said traffic signal installation, said determination based on the specific position value which changes over the course of driving through the observation zone and on the vehicle speed, so that, if required, a camera is triggered at least once for producing at least one evidentiary photograph, wherein a FMCW radar device having at least one radar sensor which sends radar radiation at an aperture angle between two outer edge beams and which receives a plurality of measurement signals within a measurement duration at said plurality of said measurement times, and wherein a radial velocity and, as position value, a specific radial distance and a specific object angle can be derived at each measurement time, be positioned and aligned next to a roadway with a roadway edge such that the observation space completely covers the stop line and the first of the two edge beams forms a horizontal, obtuse angle with a segment of the roadway edge extending in driving direction, the vehicle length is derived from the specific position values and is added to the specific radial distance that is determined only from the position of the rear end of the vehicle to an increasing extent as the stop line is approached, and a corrected specific radial distance formed in this way is then used for determining the crossing of the stop line to make a prediction about the front end of the vehicle driving over the stop line. |
