Abstract:

The system designed with the ADSP-BF533+FPGA EP1C6T144C8 architecture achieves such functions as image acquisition,target identification and meter reading,and USB transmission.DSP processes the collected image gray-scale transformation,edge detection and Hough transform to achieve recognize the pointer instrument dial,position the pointer,calculate the reading,and store and transmit the pointer reading.The system can achieve network measurement and data transmission using the RS485 bus.FPGA receives DSPs instructions to acquire and control the COMS camera,scan the keyboard and generate other device chip-select signals.Using the SQLSERVER database technology programs for the host computer,the measured data can be managed and backed up.

Key words: DSP technology;Hough transform;SQL Server;data acquisition;ADSP-BF533