γ数字多道高速采集系统设计  

Design ofγDigital Multi-channel High-speed Acquisition System

作　　者：马毅超[1] 李兆祥 徐鹏 王鑫[2] MA Yi-chao;LI Zhao-xiang;XU Peng;WANG Xin(School of Electrical and Control Engineering,Shanxi University of Science and Technology,Xi'an 710021,China;School of Electronic Information and Artificial Intelligence,Shanxi University of Science and Technology,Xi'an 710021,China)

机构地区：[1]陕西科技大学电气与控制工程学院,西安710021 [2]陕西科技大学电子信息与人工智能学院,西安710021

出　　处：《核电子学与探测技术》2022年第4期594-600,共7页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金青年(61801281);陕西省科学技术研究发展计划(2016SF418)资助。

摘　　要：以XC7A35T-FGG484现场可编辑门阵列与STM32F407ZET6单片机为控制核心,设计了数字多道高速采集系统,实现高达125 MHz的采样频率。探测器采集到的γ信号通过信号调制和模数转换发送至FPGA,经过内部积分运算及FIFO缓存,最后在STM32算法处理后将结果存入Flash并进行显示。实验结果表明系统内部算法和逻辑运算结果正确,可精确显示γ剂量率并能够实现γ能谱曲线绘制。Taking XC7A35T-FCCG484 field editable gate array and STM32F407ZET6 single chip microcomputer as the control core,a digital multi-channel high-speed acquisition system is designed to achieve a sampling frequency of up to 125 MHz.collected by the detectorγThe signal is sent to FPGA through signal modulation and analog-to-digital conversion.After internal integration operation and FIFO buffer,the result is stored in flash and displayed after being processed by STM32 algorithm.The experimental results show that the internal algorithm and logic operation results of the system are correct and can be displayed accuratelyγDose rate and can achieve Energy spectrum curve drawing.

关 键 词：数字多道 高速采集 FPGA Γ能谱 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置] TL82[自动化与计算机技术—控制科学与工程]