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课件 RFID technology and application 1 Step into RFID INTRODUCTION-TO-NFC(英文NFC介绍).ppt

课件 RFID technology and application 1 Step into RFID INTRODUCTION-TO-NFC(英文NFC介绍).ppt

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NFC Technology Overview INTRODUCTION TO NFC (Near Field Communication) the Main Contents NFC principle introduction NFC system composition Introduction of communication principle Three modes of operation Ⅰ.Introduction to NFC the Main Contents NFC features Utility function of NFC The application of NFC technology on ofo intelligent lock Ⅱ.The Application of NFC NFC Principle Introduction NFC is short for Near Field Communication. The earliest NFC, which is developed jointly by SONY and Philips, is a kind of non-contact recognition and Internet technology. And then the technology is jointly promoted by Nokia, SONY and other manufacturers. NFC can be conducted between mobile devices, consumer electronics, PCs, and smart control tools,and offers a simple, touch - control solution that allows consumers to exchange information, access content and services simply and intuitively. 3 NFC Has Multiple Uses Wireless Market Space NFC System Composition NFC Chip It has the ability to communicate with each other, computing power, and has the encryption/decryption module. NFC Antenna A near-field coupled antenna coupled with a coil magnetic field. Communication modes Active Communication mode In this mode, the device actively emit its own RF field RF to recognize and read/write other NFC devices. Communication modes Passive Communication mode In this mode,the device enabled is more like the RFID tag in the WLAN, the label does not need to produce any RF field, and it is recognized in the transmitter RF field and used the load modulation technology to transmit the information back to the main device without the requirement to produce its own RF field in the active mode. Communication modes Bidirectional Communication mode In this mode, both sides emit RF field to establish peer-to-peer communication. Three modes of operation Three Modes of Operation Peer-to-peer Communication Mode In this mode, NFC can realize wireless data ex

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