摘要
高斯滤波成形作为一种处理核脉冲的重要方法对于核仪器的研发具有重要意义。在Multisim平台上基于CR微分电路进行了模拟核脉冲信号的仿真,并通过Sallen-Key和多级CR-RCm高斯滤波器进行了模拟核信号的高斯滤波成形仿真,通过比较Sallen-Key和多级CR-RCm仿真结果表明,S-K方法的高斯滤波成形级数快,成形后的脉冲幅度增大,脉冲加宽。CR-RCm方法的高斯滤波成形级数慢,同时CR成形电路会将脉冲宽度减小。基于优势互补原理,改进了一套CR-SK混合滤波器并进行了仿真,仿真结果表明,改进的CR-SK滤波器具有成形级数快,成形后的脉冲宽度没有增宽的优势,对于提高谱仪的能量分辨率具有一定的指导意义。
Gaussian filter shaping as an important method for processing nuclear pulses is of great significance for the development of nuclear instruments.In this paper,the simulation of the nuclear pulse signal is simulated based on the CR differential circuit on the Multisim platform,and the Gaussian filter shaping simulation of the analog nuclear signal is carried out through the Sallen-Key and multi-level CR-RCmGaussian filter.The simulation results of the stage CR-RCmshow that the S-K method has a fast Gaussian filter shaping stage,the pulse amplitude after shaping increases and the pulse widens.The CR-RCmmethod has a slow Gaussian filter shaping stage,while the CR shaping circuit reduces the pulse width.Based on the principle of complementary advantages,a set of CR-SK hybrid filters is improved and simulated.The simulation results show that the improved CR-SK filter has the advantages of fast shaping series and no widening pulse width after shaping.The energy resolution of the spectrometer has certain guiding significance.
作者
张庆
徐辉
ZHANG Qing;XU Hui(School of Nuclear Science and Engineering,East China University of Technology,Nanchang 330013,China)
出处
《能源研究与管理》
2020年第2期53-57,共5页
Energy Research and Management
基金
东华理工大学研究生创新基金资助项目(DHYC-201908)。
