Research Of Energy Optimization In Microwave Band Active Rfid System

With the continuous development of the networking industry, as things basis of radio frequency identification technology increasingly become a hot topic. Microwave band active radio frequency identification system for its identification distance, large storage capacity and other characteristics has been widely used. However, the microwave band radio active radio frequency identification system has high energy consumption, limited battery capacity contradictory, severely restricted the overall promotion of the technology. Optimization of energy consumption of the system can not only promote the popularization and application of RFID technology in this band, but can bring good environmental benefits.Active tags are usually battery powered, when the battery capacity decreases, the role of active tags shorter distance, reduced reliability, battery life has become the bottleneck system applications. The main contents are as follows:Basing on the general design of existing active tags, this article has designed a conventional active tag. By optimizing the energy consumption of existing active label scheme comparison, low-power anti-collision algorithm can effectively reduce energy consumption active tag, but also has universal significance.To achieve energy consumption test labels each state found that label as much as possible in a low power state can effectively reduce the energy consumption during the anti-collision identification tag.On the basis of further studies on the ISO / IEC18000 active RFID anti-collision algorithm research to identify the main factors affecting the energy label in the algorithm proposed LP_DFSA(lower power DFSA) algorithm to reduce the anti-collision process excessive listener slots. Improved algorithm for modeling and simulation results show that the improved algorithm is relatively ISO / IEC18000 active RFID anti-collision algorithm can effectively reduce energy consumption tag.In real application environment, there usually is phenomenon that the same label repeated inventory. Conventional anti-collision algorithm can’t effectively use the information. For this phenomenon, the active tag counts during storage of the last inventory slot number. Saving the slot number and the tag ID is one mapping in the reader. This article has used this feature to bottom of the plate designing cycling times low-power anti-collision algorithm. The algorithm of newly designed and GJB7377.2-2011 the anti-collision algorithm modeling and simulation comparison. Two algorithms simulation results show that the new algorithms prevention in tags and readers to send commands to send total number of commands are much better than GJB7377.2-2011 collision algorithm. New algorithms can optimize energy tag from algorithmic level, reducing the energy consumption of the entire system, to optimize the microwave band active radio frequency identification system energy purposes.