Abstract:

In order to avoid the collision occurs when many transponders send the recognition information to the reader in radio frequency identification; identification (RFID) system at one time, compositor algorithm based on identification（ID）operating to timeslot number is proposed. This algorithm gets the sent bits in corresponding timeslots of the competitive frame for all transponders by the operating result of transponders’ identifications to the timeslot number of competitive frame. So it can confirm the sending order of all transponders in the whole data-sending period by the filled competitive frame and distribute different sending orders to different transponders. The computer simulation shows the new algorithm is effective to solve the problem of anti-collision for multi-target recognition in RFID system and effective to the situation that there are many transponders.

Key words: radio frequency identification, identification, timeslot number, operating, compositor