Research And Development Of Bluetooth Pairing Module Based On Near Field Communication Technology

Near Field Communication is a kind of short-range wireless communication technology. NFC technology is essential for a wide range of entrance guard system, electronic tickets, mobile payment.Bluetooth technology is also a short-range wireless communication technology, has been widely used mobile phones, portable computers, cars, headphones and so on.Aiming at the shortcoming of operating cumbersome with traditional bluetooth device, this paper designs a system combined with NFC technology which can pairing bluetooth devices rapidly. Firstly it analysis the relevant theories of the NFC and bluetooth technology, it tells the trend of the application and the development of the NFC technology. After telling the NFC standard and the relevant the communication protocol, the read/write device module was developed with the optimal communication distance in 5 cm. The bluetooth module was Designed which can response to a PC or microcontroller interface command via a serial port, and design the test soft of PC and android phone system. The bluetooth device will store the MAC address in the NFC tag. And then the main bluetooth communication channel is established with MAC address which is fetched from the label by NFC. The rapidly connection of bluetooth devices has been realized within the effective communication distance, which overcame the shortcomings that the traditional bluetooth can be connected to each other only by confirming PIN codes.The paper designed the test for the read and write module, and the function analysis and performance of the whole system. The Read/write module can be effective on NFC tag with reading and writing, and the distance also meets requirements. The System achieved the original idea, which shortened the matching time comparing with the traditional bluetooth connection. The design requirements are satisfied.