关键词: RFID, 神经网络, 阅读器, 防碰撞问题

Abstract: To solve the problem of multireaders’collision，an optimization algorithm of neural network based on Probabilistic Power Control was proposed． In the algorithm each reader’s transmitter power changed with the dynamic distribution of β， then the sensors were adopted to determine the similarity of readers’power on the basis of the Probabilistic Power Control， which can enable the readers work under best conditions． The experimental results show that the interference between multiple readers greatly reduced，and the distance between their identification labels can get the desired value．

Key words: RFID, neural network, reader, anti-collision problem