G - Physics – 01 – V
Patent
G - Physics
01
V
G01V 3/00 (2006.01) G01V 3/12 (2006.01) G01V 3/15 (2006.01) G07B 15/02 (2006.01)
Patent
CA 2326921
The invention concerns a protocol for detecting the presence of individuals or objects, provided with electronic tickets (14) in a defined space, in particular a carriage (10) of a means of transport. This protocol provides that the tickets are awakened upon approaching or passing through entries to said space and the tickets are localised by at least one distance measurement. Given that the error over such a measurement does not allow it to be determined with precision whether a ticket is inside or outside the entry zone (20) when the entries are open, this entry zone is excluded from the measurement or such a measurement is not validated for a ticket in this zone when the entries are open. Preferably, the entry zone is defined by a field transmitted by a transmitter (22) and received by the awakened tickets.
Degrauwe Marc
Roz Thierry
Em Microelectronic-Marin Sa
Gowling Lafleur Henderson Llp
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