4400字 有設(shè)計圖
摘要： 目前，由于CMOS集成電路具有靈敏度高，工作電壓范圍大等優(yōu)點，應(yīng)用廣泛和成熟的各種計數(shù)器都是利用CMOS集成電路制成的。可逆條紋計數(shù)儀也是以CMOS集成電路為基本組成部分，將信號進行差分處理后計數(shù)。此計數(shù)儀具有抗干擾強、集成度高、應(yīng)用范圍廣、外圍電路簡單、低功耗等優(yōu)點。設(shè)計了一種新的干涉條紋可逆計數(shù)儀，分析了對計數(shù)進行干擾的幾種因素及排除的方法。該設(shè)計應(yīng)用光電變換原理，把由氦—氖激光器或鈉光燈所發(fā)出的光信號轉(zhuǎn)換成電信號，并經(jīng)過適當?shù)奶幚?，把干涉條紋變化的數(shù)量用計數(shù)器記錄并顯示出來，比常規(guī)的干涉條紋計數(shù)手段更加自動化，數(shù)據(jù)更加準確直觀。
關(guān)鍵詞：邁克爾遜干涉儀；光電轉(zhuǎn)換；可逆計數(shù)器；抗干擾

Abstract: A new interference fringe counter on the basis of photo electric principles which converts optical signals emitted by helium-neon laseror or sodium-light lamp into electrical ones is introduced.After data processing and caculating,number of interference fringes is displayed by the counter.This meter is automatic and the data paocessed are more precise than those of the existing interference fringe counter.
Keywords: Michaelson interferometer；Photo electric effect；Reversible counter； Anti-interference