推荐星级:
  • 1
  • 2
  • 3
  • 4
  • 5

基于STM32F407的AOTF光谱仪双通道信号检测系统

更新时间:2020-06-04 06:17:17 大小:1M 上传用户:IC老兵查看TA发布的资源 标签:stm32aotf光谱仪 下载积分:5分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

资料介绍

基于声光可调谐器件(AOTF)原理设计的近红外光谱仪的光电探测器检测到的有用光信号远远小于光源的噪声信号,在检测时容易被淹没在强噪声中。为了提高信号检测系统的信噪比,针对AOTF近红外光谱仪待测的微弱光信号,基于相关检测原理,以STM32F407为控制核心,以锁相放大电路为电路核心,设计了新型双通道信号检测系统。同时设计新型光源调制电路对光源进行交流调制,便于后级锁相检测。经过系统测试验证,该系统检测精度高、可以获得高质量的物质漫反射光谱图、系统稳定性高,可以应用在AOTF近红外光谱仪器中。

The useful light signals detected by the infrared detector of near infrared spectrometer based on AOTF were much smaller than the noise of the light source,and it was easily submerged in strong noise when detected.In order to improve the noise-signal ratio of signal detection system,it was in view of the weak light signal detected by AOTF near-infrared spectrometer and based on correlation detection principle,STM32F407 was taken as the control core and the lock-in amplifier circuit was taken as the circuit core,a new dual channel signal detection system was designed.At the same time,a new light source modulation circuit was designed to communicate and modulate the light source so as to facili...

部分文件列表

文件名 大小
基于STM32F407的AOTF光谱仪双通道信号检测系统.pdf 1M

全部评论(0)

暂无评论

上传资源 上传优质资源有赏金

  • 打赏
  • 30日榜单

推荐下载