| 摘要 |
<p>An apparatus for the automatic logging of vehicles in motion, with exchange of data, in particular with automatic debit of tolls, comprises a fixed transceiver station able to communicate with a plurality of on-board transceiver units (3) each associated with a vehicle. In order to preclude the vehicles from travelling through the transceiver station in a column in a single-carriageway travel lane, the invention provides for the transceiver station to be provided with a plurality of antennae (A.1-A.n) each of which forms an area of coverage (C.1-C.n) of appreciably smaller dimensions than the dimensions of the vehicles, whereby a single vehicle at a time can cross through each area of coverage and hence a single on-board unit (3) can communicate with each antenna (A.1-A.n) at a time, while the signals picked up by each antenna (A.1-A.n) are computed separately from one another.</p> |
