摘要
使用高精度的数字微镜(DMD)阵列代替传统的阿达玛编码模板,使得阿达玛光学编码过程中没有任何机械运动部件,从而大大提高了光谱仪的抗震性和稳定性.利用FPGA和MSP430单片机控制DMD产生阿达玛变换编码模板,并按照特定的时序完成模板的移动、模拟信号/数字信号(A/D)采样脉冲产生与筛选等工作.利用以该模板为核心部件的阿达玛变换光谱仪进行了性能测试实验,结果表明该仪器性能优良,稳定可靠.
The core part of the Hadama transform spectrometer is its masks. Traditional Hada-a＇s masks was replaced by digital micromirror device （DMD） with high accuracy, making the spectrome ter without any mechanical move parts to improving the stability greatly. FPGA and MSP430 micro- computer were used to control DMD generating Hadamard transform mask, finish the job of mask＇s cycling movement and the screening of analog-signal/digital-signal（A/D）sampling pulse. Finally, we have tested the spectromenter＇s ability which are based on this mask. The results show that the in- strument reliable perfor-mance.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2012年第10期30-33,共4页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家科技支撑计划资助项目(2011BAF02B02)
关键词
光谱仪
模板
采样
阿达玛变换
数字微镜(DMD)
FPGA
spectrometer
masks
samping
Hadama-transform
digital micromirror device（DMD）
FPGA （field programmable gate array）
