AUTOMATIC FUNCTIONAL MONITORING OF AN ANTENNA UNIT FOR A VEHICLE-MOUNTED TOLL-PAYMENT UNIT FOR AN ELECTRONIC TOLL SYSTEM

摘要

The invention relates to an automatic function control of an antenna unit (ANE) of a vehicle-mounted toll unit (EIN) of an electronic toll system (SYS ) comprising a position detection system (POS). Said toll unit (EIN) comprises a reception unit (EMP) linked with the antenna unit (ANE) and the antenna unit (ANE) is adapted to receive position detection signals (PES). According to t he invention, at least one control signal (SIG) that interacts with the antenna unit (ANE) is produced and supplied to the toll unit (EIN), and the function of the antenna unit (ANE) is checked by means of the control signal (SIG).