基于android的nfc读卡器的分析和实现word格式论文.docxVIP

NFC READER RESEARCH AND IMPLEMENTATION BASED ON ANDROIDABSTRACTNear Field Communication (NFC) known as a near field communication is contactless communication technology within ten centimeters. Compared with other wireless communication technologies, NFC provides easy, safe, quick and automatic communication between various devices. With NFC smart Tags widely used in daily life, the wide market prospects will need a lot of smart handheld terminals with NFC reader.Currently, the Android operating system is open source operating system that is widely used in smart handheld terminals. But Android smart handheld terminals with NFC reader are in its infancy. So the combination of Android and NFC will bring a wide space for NFC development. In addition, materials about NFC reader are scattered in the market. Therefore, research on the subject, I hope to give newcomers guidance and inspiration.By the method of the progressive layers, the article tells NFC reader based on Android. NFC reader based on Android leads by describing the basics and the current status of NFC and Android. Then hardware part and software overall architecture will be introduced. At the end, the key points of implementing this reader will be introduced.In this paper, the research focuses on the content as follows.First of all, hardware features, software overall of NFC reader system will be introduced. Software overall architecture part focuses on the architecture of the reader mode and related protocol including the definition of NFC data exchange format, common record type definition, tag definition, ISO / IEC 14443, ISO / IEC 18092. NFC data exchange format part focuses on NFC data exchange format and record format. ISO / IEC 14443 part focuses on the main differences between the ISO / IEC 14443 TYPE A and ISO / IEC 14443 TYPE Bincluding the the carrier modulation depth, encoding of binary numbers and anti-collision mechanism. ISO / IEC 18092 part focuses on the communication mode, modulation, enco