A novel rotation speed measurement method based on optical mouse sensor is proposed.The rotation speed measurement principle is analyzed.The key problems such as software initializing of the optical mouse sensor ADNS-3080 and focusing of the lens are solved.An experiment system based on optical mouse sensor is designed.The experimental results indicate that this method can exactly distinguish the direction

the linearity and responsivity of the experiment system are good in the 1000r/min scope.The method is suitable in the low-speed survey and direction distinguishing.