| 摘要 |
Device (D) for communicating between a mobile element and a fixed element, includes: an electromagnetic field-based reader (L) including a transmitter with a transmitting antenna and a receiver with a first antenna placed in a housing (1), and a beacon (B) including a receiver able to receive a signal originating from the transmitter of the reader (L) so as to provide energy to a transmitter able to dispatch a signal received by the receiver of the reader (L), the receiver of the reader (L) including at least one second antenna and signal comparison elements able to compare the signal received by the first antenna of the receiver with the signal received by the second antenna so as to determine the moment at which the reader (L) passes vertically in line with the beacon (B).
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