Tag system with anti-collision features

Details Tag system with anti-collision features Tag system with anti-collision features

G - Physics

01

S

G01S 13/76 (2006.01) G06K 7/00 (2006.01) G08B 13/22 (2006.01) G08B 25/10 (2006.01)

Patent

CA 2266337

A system of communicating between a master communication device and a plurality of slave communication devices is disclosed, whereby the master determines if any of the plurality of slave devices exist within a defined geographic area and, if so, sends a bit- by-bit command for the slaves to identify themselves; via a unique binary identification number. To avoid collision when the slaves respond, the slaves respond to the master's command within a predetermined time period of a time window providing the ID bit by bit. Responses are acknowledged by the master such that only one slave is able to respond with its complete full ID after a bit-by-bit command from the master.

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