Study On Automatic Supermarket Cash Register System Based On UHF RFID

ABSTRACT:The cash register system is an important part of the supermarket operation and management, and its use of technology is still traditional barcode technology, under which technology not only the supermarket cash register system is unefficient, but also consumer shopping satisfaction is not high. To change the efficiency of the cash register system, we need to improve the way of supermarket management. In this paper, I have studied the design and implementation of the supermarket cash register system and RFID anti-collision algorithm. The main work is as follows:Designing the supermarket automatic cash register system based UHF radio frequency identification technology. By analyzing the background of supermarket retail industry and the current status of home and abroad development, and its feasibility analysis of the supermarket cash register system application, The paper designed the supermarket automatic cash register system based UHF radio frequency identification technology, which is capable of quick and accurate commodities wireless identification and settlement, realizing the supermarket cash register system of intelligent management.Proposing anti-collision algorithm based on binary tree, retreating dynamic bit binary tree anti-collision algorithm. In this part, the paper introduces the causes and classification of the radio frequency identification technology anti-collision algorithm, and focuses on the analysis of the anti-collision algorithm to prevent the tags collision. For ALOHA algorithm based on the uncertainty of the algorithm, the paper mainly does a simple performance analysis and simulation throughput to pure ALOHA algorithm, slotted ALOHA algorithm, frame slotted ALOHA algorithm and dynamic frame slotted ALOHA algorithm. For a binary tree algorithm based on deterministic algorithm, the paper has described in detail the principle and implementation process of basic binary tree anti-collision algorithm, dynamic binary tree anti-collision algorithm and Backward binary tree anti-collision algorithm, and proposed improvements on the basis of the theory binary tree anti-collision algorithm, namely dynamic retreat bit binary tree anti-collision algorithm, which not only combines the advantages of dynamic binary tree and binary tree retreating, but also introduced a collision handling mechanism. After the performance of the three algorithms for simulation analysis, the improved algorithm proposed in slot number and the amount of information transmitted in the time slots have been improved.Completing the hardware and software parts of the system of the Automatic Supermarket Cash Register System based on UHF RFID, the MFC based on the test system interface program, and having a comprehensive system of logic and functional testing.Finally, this paper summarizes the work and prospects, the study points out the need to improve the design direction of the section and the next. The design of the entire system of radio frequency identification applications in the supermarket retail industry has a certain reference value.