迈克尔逊干涉仪自动计数器的设计  

The Design of Automatic Counter for Michelson Interferometer

作　　者：毛巍威[1] 李永涛[1] 包刚[1] 李兴鳌[1] 徐凯臣[1] 杨运升[1] MAO Wei-wei, LI Yong-tao, BAO Gang, LI Xing-ao, XU Kai-chen, YANG Yun-sheng （Nanjing University of Posts and Telecommunications, Nanjing 210046, China）

机构地区：[1]南京邮电大学,江苏南京210046

出　　处：《电脑知识与技术》2012年第12期8308-8310,共3页Computer Knowledge and Technology

基　　金：国家自然科学基金（61171092）; 南京邮电大学自制实验仪器项目（2011XZZ14）; 南京邮电大学STITP项目（XYB2012161）

摘　　要：该文介绍了一种迈克尔逊干涉仪自动计数器的设计与应用。该计数器通过比较光敏电阻和阈值来采集干涉条纹的变化,同时产生与明暗条纹相对应的电脉冲,再通过单片机来计数并显示。结构简单,具有较好的实用性,并且实验人员测量时可以从烦琐的读数工作中解脱出来。实验测试结果显示,该装置改善了人工计数引起的一些问题,降低了测量产生的误差,提高了实验结果的精确度。The design and applications of automatic counter for Michelson interferometer are presented. The photoconductive re- sistance and thresholds comparator are used in the device to collect the interference stripes, producing the electric impulses corre- sponding to the light and dark stripes, The electric impulses are counted and displayed by the microcontrollers. The device for the experiment has a simply structure, good accuracy and may leave the operator from trivial counting works. Based on the data of experiment, problems of manual count can be solved, measurement error be reduced, thus the accuracy of the experiment im-- proved.

关 键 词：迈克尔逊干涉仪 计数器 干涉条纹 单片机 光敏电阻 

分 类 号：O4-333[理学—物理]