Anti-fraud device for use at the automatic barrier of a motor vehicle paying station, comprises a magnetic sensor for detection of vehicle wheels and a corresponding axle counter so that an alarm is triggered above a given count

摘要

Device comprises an axle detector (20, 50) placed perpendicularly below the barrier element (2) of the payment channel and an axle counter (30) for triggering an alarm, when the number of axles exceeds a preset limit. The axle detector is based on a magnetic sensor (20) that detects the passage of vehicle wheels together with an excitation and processing circuit (50). The invention also relates to a corresponding payment barrier for motor vehicles at a toll, etc.