High Speed Moving Bill Denomination On Line Identification Techniques Based On DSP

With the fast development of technology & economic, graphic detection technology is more and more applied in the fields of control, process management, security monitor and human life. In now day ,with the large bill rash and economic development, the work role of bill denomination detection can not still be applied by human being. Bill denomination detection technology by processor is so important that the system solution of bill denomination detection is designed based on DM642 of Ti Corporation.In this paper, with the analyses of system function requirement, the equipment of high-speed linear CCD, high-speed dual capture AD and CPLD are chosen for graphic capture system. With the special functions of video port and EDMA in DM642, DM642 is connected with graphic capture system. The graphic can be captured without the support of CPU.Sample model is contributed according to captured graphic and the fast bill denomination detection program is for embedded system is designed, consisting of graphic pre-process ,special area achievement and sample compare . This program is co-designed for DSP system.In this paper, based on the real-time embedded operation system of DSP/BIOS, the multi-task control solution is design for system control process, and the equipment driver of FVID/GIO model is designed for graphic capture equipment.