| RFID (Radio Frequency Identification) is a non-contact automatic identification technology. Using RFID the objects in rapid movement are identifiable, a number of labels can be identified simultaneously. The speed and convenience of operation, without manual intervention are also the advantages of RFID. With the maturity of RFID technologies and standards, RFID industry is developing rapidly in recent years coupled with the support of national policies.The main work of this thesis is on the development of software system in RFID dual-frequency reader. Through analyzing the real need of the project and tracking the present technology, this software system includes the functions of dual-frequency tag identification, data processing and wireless communication. This thesis completely explains the design and implementation of these modules. This software system has much value on the performance of the dual-frequency RFID reader. The dual-frequency operation module can control the behavior of the tag reading and writing in both 915MHz and 13.56MHz electronic tag. Smoothing module take responsibility of realizing the smoothing algorithm to solve the interference problem brought by the wireless channel. Compared with the traditional algorithm, this method bears the merits of simple and flexible advantages. The wireless communication module satisfies the need of transmission of information, which caters to the trend of network technology.The main value of the thesis lies in the truth: that is to make a more powerful RFID reader which shoots the problem brought by unstable data from wireless channel. Based on analyzing the present technology, improvement in the distribution, expansibility and management, a kind of RFID reader with multi-function is put forward. This system provides fine stability along with the merits of simple and stable performance. Based on this software system, tests are made to verify the performance of this RFID reader which shows the expectation of design. |
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