摘要
针对迈克尔逊干涉仪实验需要人工计数干涉环的问题,研制了一种干涉环自动计数装置.该装置运用光电传感和阈值比较的方法,采集干涉环,产生与明暗环纹相对应的电脉冲,由单片机计数并显示.为滤除电路噪声产生的干扰脉冲,在软件中使用了延时技术,提高了计数的准确性.实验结果表明:该装置计数精确,简单实用,可为此项实验提供方便.
Aiming at the fact that the Michelson＇s interferometer needs artificial counting the interference rings, a kind of interference ring auto-count device is designed. The optoelectronic sensor and thresholds comparator are used in the device to collect the interference ring, producing the electric impulses corresponding to the light and dark fringes. The electric impulses are counted and displayed by the microcontrollers. In order to eli- minate the interfering impulses generated by circuit noise, the delay technology of is used in the software, which improves accuracy of pulse counting. The experimental result shows that the device is accurate and feasible for Michelson interference experiment.
出处
《光电技术应用》
2009年第6期36-38,50,共4页
Electro-Optic Technology Application
基金
科学创新课题(090415215)
关键词
迈克尔逊干涉仪
干涉环计数
装置设计
Michelson＇s interferometer
interference ring counting
device design
