A new design of embedded train-wheel metrical instrument
Zhang Deng · Application of Electronic Technique · 2010
Traditional metrical instruments always have the disadvantages of large volume,high cost and uncontrollable precision.To overcome these disadvantages,a new kind of hand-hold metrical instrument,based on the ARM chip LPC2214,is designed in this paper,which is used to measure the size of train wheel.In the process of design,according to the reality and requirements,flexible and efficient methords are taken into action,making full use of the resources in existence.And the circuits,as well as the programm,have high economic value and good use for reference.