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Using high-speed 8-bit AVR Microcontroller and FPGA programmable digital chip design tachometer sine wave signal generator, replace the corresponding sensors, signal generator for the vehicle speed to form the production process of calibration, design and aging equipment. Direct digital synthesis techniques to generate sine wave signal using high-speed field programmable gate array (FPGA) for direct digital synthesis technology, Therefore signal source with high precision and high reliability features will DDS technology into the test system achieve sine wave signal generator used to replace speed sensors, as well as a general signal generator calibration equipment, The results show that the system designed to meet the complex requirements of the test environment and with a certain extension.

After a macro processor of 8 of AVR of the high speed is adopted, a tip and the rotating speed of the number FPGA programs are designed and the signal generation capacity of the signature