Aiming at performance decling problem of data recognition

transmission delay and signal integrity

caused by deployed multiple reader and multiple transponders to meet application of multi-class applications

heterogeneous networks

diversity of service system

in radio frequency identification（ RFID） system

a collaborative anti-collision algorithm suitable for multi-reader / transponder system based on relay sensor is studied.According to the three situations of data collision occur in system

combined with data collosion angle and weight of collosion effect

put forward an effective data collision avoiding design scheme of relay sensor structure; design a peripheral circuit suitable for RFID system relay sensor collaboration; combined with signal convergence of three kinds of radiation element in system covers area

present a collaborative anti-collision algorithm based on relay sensor. Experimental results show that in reading time slot and transmission delay

the proposed collaborative anticollision algorithm is obviously superior to the traditional ALOHA algorithm.