A Design And Implementation Of Access Point To The Internet Of Things Based On NFC

The Internet of Things has been developed rapidly in recent years since it was first brought up by MIT in 1999. The basic concept of IOT is to connect object by information and sensor system through RFID, and it can be applied to finance, logistics, retailing, military and smart city. The technoloty of IOT is mainly based on sensor network. The current sensor network communication technologies are Bluetooth, Zigbee, WIFI, infrared and so on. But those technologies are relatively high cost, huge power consumption, limited amount of node capacity, and unsafe data transmition. So in this article, I brought up a design and implementation of access point to the Internet of Things based on NFC. The design achieves the data transmission of the sensor network in the sensing layer of IOT and the cellphone application in the application layer of IOT by the NFC technoloty in the network layer of IOT. The main work and innovation points of this article are :1. Build the access point platform to IOT based on NFC technology. And the platform work in the passive mode, it can work without power supply. The system can transfer among sleep mode, standby mode and work mode to achieve low power consumption. Besides this platform has large node capacity, good compatibility, and good safety. Different from traditional access technology to IOT, in my design, there is no limit of nodes in this IOT.2. The technology of data transmission is NFC technology which is a short-distance wireless communication technology. Thus the data transmission will not be infected by other access point. This is an advantage that the traditional data transmission technology, such as Zigbee, is not equipt with.3. The ph-sensor tag is based on OTFT. The ph-sensor tag is designed to be a one-time used device and it is low cost and environmental friendly. In the OLED display module, the OLED is driven by OTFT and has the characteristics of low power consumption and light to carry.The NFC-based networking access point platform is stable and reliable, low investment cost, easy to install and use. After measurement, the system functions well, and achieve data exchange between the mobile application in the application layer of IOT and sensors in the sensing layer of IOT via NFC technology in the network layer of IOT. Besides the PH sensor module can measure accurately.