Design Of ARM + Linux Public Bicycle System Based Network Management Station

In recent years, with the continuous development of embedded system technology, embedded system has been widely used in industrial control, wireless communication, mobile device and intelligent household appliance, meanwhile, combining the RFID technology, embedded system gradually become an important component of constructing the Internet of things.Public bicycle system combines with data management center, website management base station, intelligent lock cylinder and bicycle. As the key part of the connection between data management center and intelligent lock cylinder, website management base station mainly finishes the function of querying information of RF card, reporting the loss of card, borrowing the bicycle without card and receiving and sending data. In order to enhance the management efficiency and avoid accident fault, management base station integrated embedded database Sqlite to manage the data. Network management stations can communicate with the intelligent lock cylinder through the485bus, and connect the data management center through the GPRS to complete data transmiting.The main purpose of this paper is to design a Qt graphical interface based on embedded system platform, simulates the data query and data processing function of website management base station. mini2440development board and Linux OS are used for embedded system platform to complete the construction of the embedded system design environment, including the configuration of cross compiling and NFS, and the transplant of U-Boot and Qt SDK. In addition, this paper has also design the hard circuit of MIFARE reader,Single Chip Microcomputer and GPRS module, then complete designing and developing the program of MIFARE reader, GPRS module,485bus and graphical interface.