The Implementation Of Android System Based NFC Technology

NFC is a short-range wireless communications which sponsored by Philips and main pushed by Sony, Nokia and other leading international manufacturers. By intergrating induction card, induction reader and point-to-point function in a NFC chip, this technology can provide communication in a short-range with a compatible device in order to achieve identification and data exchange. Android mobile phone with the integrated NFC chip can read the information of other NFC devices or other NFC lable and achieve a small electronic payment. Because of NFC short operating distance, which greatly simplifies the entire identification process, you can visit each other electronic devices more secure, direct and clear.Computers, mobile phones, digital cameras, PDA and other electronic devices can connect with each other wirelessly, quickly and safely through NFC, so as to process the data exchange.Paper includes the following aspects:First, the article describes the significance of NFC technology research, development status and the basic concepts of Android, then do a detailed analysis to Android development model. The detailed description of the composition of Android application based on the analysis of system atchitecture.Secondly, the article describes NFC technology communication mode, working mode and application scenarios, then makes a comparison to Blueteeth, WIFI and other wireless communications technologies and do further analysis to protocols of NFC technology standards such as LLCP, NDEF.Again, the focus of this paper is achievement of NFC technology in Android system. The hierarchy of technology includes application layer, the hardward abstraction layer, the host control interface layer and data link layer. The article do more in-depth research on various levels of layer especially HCP protocol in host control interface layer. The driver describes data transmission process between Android mobile phone and NFC chip using I2C protocol. The Android phone with driver can achieve normal NFC communication.Finally, the most common use of Mifare card equipped with NFC information is successfully produced. The article detailed describes the process of production of card, the card detection and NFC data detection. The further experiments verifies card reader model and pear-to-pear model in NFC communication.