Design of Equal Precision Cymometer by MCU and FPGA

The design of equal cymometer is presented based on MCU and FPGA,according to the principle of equivalent accuracy measuring frequency.After amplification and rectification,the signal to be measured is transferred in FPGA;the signal and standard signal source were counted with FPGA controlled by MCU;the result of measure is shown after MCU has received the measuring frequency data and calculated it.The measure method combined MCU with FPGA has rapid measuring frequency,wide range of measurement,and high reliability.