激光衍射法测量细丝直径的研究

Study of fine diameter measurments using laser diffraction method

在对几种应用CCD (电荷耦合器件) 技术测量细丝直径方法进行分析的基础上, 提出了基于夫琅和费衍射理论和巴比涅互补原理的激光衍射细丝直径动态测量方法。该方法具有测量精度高、速度快、非接触、使用方便, 且易与微机联接实现自动化测量等优点。利用该系统可以实现对直径为20～100 μm 的细丝进行相对误差为1%

Based on analysis for several kinds of fine wire diameter measurement using CCD (Charge Couple Device) technique, according to Frauhofer diffraction theory and Babinet principle, a method of fine diameter dynamic measurement by use of laser diffraction technique is presented. The system has advantages of quick and non contact measurement, higher measuring accuracy and convenient operation, and is easy to connect with computer to make automatic measurement. Relative measurement error of 1% for 20~100 μm fine wire diameter is achieved.