Synchronization of radio frequency identification readers using infrared pulse

摘要

A system and method system for synchronizing Radio Frequency Identification (RFID) readers includes a plurality of RFID readers disposed within an environment. Each RFID reader includes an infrared emitter and an infrared detector. A master controller also includes a master infrared emitter and is operable to emit a master infrared flash from the master infrared emitter for synchronizing the plurality of RFID readers. Any of the RFID readers, upon detecting an infrared flash with their associated infrared detector, is operable to synchronize their dwell timing with the detected infrared flash and emit their own infrared flash from their associated infrared emitter, so as to propagate infrared flashes to all the RFID readers within the environment.

主权项

1. A system for synchronizing Radio Frequency Identification (RFID) readers, comprising:
a plurality of RFID readers disposed within an environment, each RFID reader including a light emitter and a light detector, and a master controller including a master light emitter, the master controller operable to emit a master light flash from the master light emitter for synchronizing the plurality of RFID readers, wherein any of the RFID readers, upon detecting a light flash with their associated light detector, is operable to synchronize their dwell timing with the detected light flash and emit their own light flash from their associated light emitter in response to said detecting the light flash with their associated light detector, so as to propagate light flashes to all the RFID readers within the environment.