Abstract: Radio frectuency identification technology is taken as the key technology in the application of Internet of things and produces collision inevitably. In view of the basic binary anti-collision algorithm's defects, this paper pro- posed an improved binary anti-collision algorithm Using the obtained collision message, the proposed algorithm trans- mils data dynamically and modifies return mode to reduce data amount and the search command transmission times. The results show that compared with the basic binary anti-collision algorithm, this proposed algorithm improves the throughput of the system, reduces the system transmission delay, and is very suitable for the large number of tag identi- fication in Internet of things.

Key words: Tags colhsion,Radio frequency identification,I3inary anti collision algorithm