基于激光多普勒效应的音乐盒
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摘要
利用双圆盘光栅动静结合的方式设计了激光多普勒音乐盒演示仪器.将双光栅放在激光源与光信号转换器之间,按下琴键,改变旋转光栅的运动速度,动静光栅发生光的多普勒效应.经信号转换器使该信号变为电信号,使用单片机进行频率的采集及运算处理,最终通过扬声器播放出乐音.
The music box based on laser Doppler effect was designed by means of dynamic and static combination of double-disk gratings.The double gratings were placed between the laser source and the optical signal converter.The key was pressed to change the moving speed of the rotating grating so that both the dynamic and the static grating formed a light beat,i.e.,the Doppler effect of the light occured.And the signal converter turned it into an electrical signal.A musical tone through a speaker could be transmitted finally by using a single-chip microcomputer for frequency acquisition and arithmetic processing.
The music box based on laser Doppler effect was designed by means of dynamic and static combination of double-disk gratings.The double gratings were placed between the laser source and the optical signal converter.The key was pressed to change the moving speed of the rotating grating so that both the dynamic and the static grating formed a light beat,i.e.,the Doppler effect of the light occured.And the signal converter turned it into an electrical signal.A musical tone through a speaker could be transmitted finally by using a single-chip microcomputer for frequency acquisition and arithmetic processing.
引文
[1]杜振辉,李淑清,蒋诚志,等.激光光栅多普勒效应微小振动测量[J].光学学报,2004,24(6):834-837.
[2]张艳艳,巩轲,何淑芳,等.激光多普勒测速技术进展[J].激光与红外,2010,40(11):1157-1162.
[3]陈益萍.激光多普勒测速技术原理及其应用[J].电子世界,2013(7):35-37.
[4]周朕,卢佃清,史林兴.硅光电池特性研究[J].实验室研究与探索,2011,30(11):36-39.
[5]侯俊钦,吴小培,杨一军.微伏信号放大系统设计[J].计算机技术与发展,2007,17(10):198-201.
[6]杨平,王威.MSP430系列超低功耗单片机及应用[J].国外电子测量技术,2008,27(12):48-50.
[2]张艳艳,巩轲,何淑芳,等.激光多普勒测速技术进展[J].激光与红外,2010,40(11):1157-1162.
[3]陈益萍.激光多普勒测速技术原理及其应用[J].电子世界,2013(7):35-37.
[4]周朕,卢佃清,史林兴.硅光电池特性研究[J].实验室研究与探索,2011,30(11):36-39.
[5]侯俊钦,吴小培,杨一军.微伏信号放大系统设计[J].计算机技术与发展,2007,17(10):198-201.
[6]杨平,王威.MSP430系列超低功耗单片机及应用[J].国外电子测量技术,2008,27(12):48-50.