介绍了一种基于Arduino 单片机的双光纤双向干涉条纹计数器.该装置可根据干涉条纹的涌出和陷入实现条纹的双

向计数.在干涉法测量金属热膨胀系数实验中，使用此计数器对条纹计数，具有成本低廉、操作简易、计数精度高、抗干扰能力

强、反应时间短等优点.

A double-fiber bidirectional interference fringe counter based on Arduino singlechip is presented. The device can achieve the bidirectional counting of fringes according to the gushing and the sinking of interference fringes. In the experiment of measuring the thermal expansion coefficient of metal by the interferometry，this counter is used to count the fringes. It has low cost，convenient operation，high counting accuracy，strong anti-interference ability，short reaction time and so on.