Abstract: A vehicle detection system (1) comprising at least one detection unit (2). Each detection unit corresponds to a detection volume (Sn) and each detection unit comprises at least two spaced-apart magnetic field sensors including first and second magnetic field sensors (6a, 6b; FIG. 3). Each magnetic field sensor is configured to provide a series of instantaneous magnetic field measurements spaced apart in time. A processing unit (3) is configured to receive the time series of instantaneous magnetic field measurements. The processing unit is configured to store the time series of instantaneous magnetic field measurements in a table (8; FIG. 5). The processing unit is configured to determine the presence of a vehicle (7) in each detection volume in dependence upon the magnetic field measurements in the table.

Abstract: A metal detection device is described which enables, by means of a module for determining the variation in the magnetic field, the determination, in accordance with the variations in the magnetic field, of the nearby presence of metallic materials based on the interference produced by said presence in the magnetic field that surrounds the device described herein.