基于STM32的微弱光电信号检测系统的设计与实现  

Design and implementation of weak photoelectric signal detection system based on STM32

作　　者：吴永忠[1] 梅新星 WU Yongzhong;MEI Xinxing(School of Computer Science and Information Engineering,Hefei University of Technology,Hefei 230601,China)

机构地区：[1]合肥工业大学计算机与信息学院,安徽合肥230601

出　　处：《传感器与微系统》2020年第6期107-109,112,共4页Transducer and Microsystem Technologies

摘　　要：针对光电倍增管难以检测到微弱光电信号的问题,以CR131光电倍增管为研究对象,设计了一种基于μC/OS-Ⅱ的微弱光电信号检测系统。系统以高性能、低功耗的STM32F103为主控制器,设有电源模块、微弱光检测模块、信号处理模块、通信模块和人机对话模块,经过硬件设计和编程调试之后,实现了利用光电倍增管检测微弱光电信号的功能。实验结果表明:设计的系统拓宽了光电信号的检测范围,能有效地降低噪声,提高微弱光电信号检测的信噪比。Aiming at the problem that weak photoelectric signal is difficult to be detected by photomultiplier tube(PMT),taking CR131 as the research object,a weak photoelectric signal detection system based on μC/OS-Ⅱ is designed. The system uses high-performance,low-power consumption STM32 F103 as the main controller,with power module,weak photoelectric signal detection module,signal processing module,communication module and human-computer interaction module. After hardware design and programming,the system implements the function of detecting weak photoelectric signals by using PMT. The experimental results show that the designed system broadens the detection range of photoelectric signal,and it can effectively reduce the noise and improve the signalto-noise ratio of weak photoelectric signal detection.

关 键 词：微弱信号 光电检测 信号处理 STM32 μC/OS-Ⅱ 

分 类 号：TP36&2[自动化与计算机技术—计算机系统结构] TP212[自动化与计算机技术—计算机科学与技术]