| An effective parking management system has been developed to solve the parking problems of urban traffic. Parking handset is an important part of the parking management system, by which the vehicles information was inputted and the vehicles was supervised and managed effectively. The Parking handset implement many functions such as the wireless communications with Parking Meters, reading and writing the IC of member owners, acquisition images of the vehicle number, providing a friendly interactive interface, furthermore, processing the vehicle access information real-time and charging the parking fees.The hardware design solution was advanced, and the design and realization of software modules of parking handset is described in detail. System hardware platforms used S3C2440 processor based on ARM architecture as core microprocessor and external expand the nRF24El radio transceiver chip, ZLG500AGT module, CMOS7620 camera. On the basis of this hardware platform, software platform based on the embedded Linux system was built, including: the establishment of cross compiler tool chain, QT transplant, Linux kernel transplantation, the facture of file system, embedded database SQLite3 transplant, and the build of remote debugging environment of GDB server. Serial programming based on wireless chip, the driving of reader equipment, the realization of camera module and user interface software designs were accomplished. Thus the functions of the parking handset were achieved. The debugging shows design is up to system requirements, and the design of parking handset is viable. The handset has a good application prospect. |
