摘要
金属条码是按信息编码规则生成由一组宽窄不同的金属薄条（铜）粘附在塑料基底上组成的，本文提出将电涡流传感器沙量位移的原理应用于测量金属均匀薄条宽度的方法。
The metal bar code is composed of a series of thin melal bars of various widths (copper), which is genereted by information encoding rule and adheres to plastic substrate, this articl presents a method to measure the width of with even thickness metal bar by using the SHEV'S principle and discusses the main technological problem about the reseach on the metal bar code scanner.
