提出了轮带及托轮外径的一种在线测量万法，并给出了单片机在外径测量中的应用实例。

The Measurement of Tyre/Roller’s Outer Diamater Liu Xiaobing(Lect.,Dept of Mathematics & Physics,WUT,Wuhan 430070,China.)A new method for tyre/roller＇s dynamic outer diameter measurement is described and some practical examples with the application of single chip micro-controller are shown in the paper.:diameter;tyre;measure;single chip micro-controller