基于嵌入式VXI总线的伽马能谱LCD显示系统设计  

Design of Gamma Energy Spectrum LCD Display System Based on Embedded VXI Bus

作　　者：叶伟慧 YE Weihui(Guangdong Ocean University Cunjin College,Zhanjiang 524088)

机构地区：[1]广东海洋大学寸金学院

出　　处：《舰船电子工程》2019年第8期138-143,共6页Ship Electronic Engineering

摘　　要：为了实现放射性伽马能谱探测的可视化视觉分析,进行伽马能谱LCD显示系统设计,提出一种基于嵌入式VXI总线技术的伽马能谱LCD显示系统设计方法。首先进行LCD显示系统的外围器件选择和核心功能模块的总体设计描述,硬件设计部分主要包括时钟电路、AD电路、复位电路、伽马能谱基线恢复电路和程序加载电路等,采用ADSP21160处理器作为核心控制芯片进行系统集成电路设计,采用嵌入式VXI总线技术进行伽马能谱采样和总线数据传输,进行LCD显示模块的接口程序设计,实现伽马能谱的基线漂移抑制和帧数据实时回放。实验结果表明,该伽马能谱LCD显示系统能有效实现脉冲宽度为2μs的伽马能谱放射源测量,在光电倍增管LCD显示器上实现对伽马能谱测量的可视化分析和信号评估。In order to analyze the visual realization of airborne gamma ray detection of gamma ray spectrum,and design LCD display system,a kind of embedded VXI bus technology is put forward based on gamma energy spectrum LCD display system design method.The overall design of peripheral device selection and the core module of the system in LCD display are described,the hardware design mainly includes the clock circuit,AD circuit,reset circuit,gamma ray spectrum baseline restoration circuit and program loading circuit.ADSP21160 processor is taken as the core control chip system for integrated circuit design,sampling and gamma ray spectrum bus data are transported by using embedded VXI bus technology,interface program of LCD display module is designed,real-time playback of baseline drift suppression and gamma ray spectrum data frame is realized.The experimental results show that the gamma ray spectrum of LCD display system can effectively achieve the pulse width of 2μs gamma ray radiation source in the measurement,analysis and evaluation of the implementation of visual signal gamma-spectrometry display photomultiplier tube LCD.

关 键 词：嵌入式 VXI总线 伽马能谱 LCD显示 

分 类 号：TN431.2[电子电信—微电子学与固体电子学]