Method and system to detect with radar the passage of a vehicle at a point to be monitored on a highway

摘要

A method for detecting the passage of a vehicle (V) past a predetermined monitoring point (1) on a road (2), where: the monitoring point (1) is a stop line associated with a traffic light (3) , a red light signal (3) is generated when the traffic light (3) is red, an activation signal (T) is generated when a vehicle (V) passes the monitoring point (1) in a predetermined direction, and at least one image registration of the vehicle (V) is made that passes when the red light signal (3) and the activation signal (T) are generated simultaneously, characterized in that: from a location located remotely, at least a radar beam (5) is transmitted substantially continuously to the monitoring point (1), the reflections of at least one transmitted radar beam (5) are received at the location located remotely, and from the reflections received it is determined that the vehicle (V) is passing the monitor point (1) , where the step of the monitoring point (1) is determined by calculating from the reflections received the distance of the vehicle (V) from the transmission and reception location and comparing the distance calculated in this way with the known distance between the transmission and reception location and the monitoring point (1), and where a series of vehicle distance values (V) is calculated from a number of reflections received successively, and the detection that the vehicle (V) the monitoring point (1) is passing is valid only if this series of distance values corresponds precisely.