强激光与粒子束2017，Vol.29Issue(7)：54-59,6.DOI:10.11884/HPLPB201729.170009
中子数字成像FPGA抗辐照技术研究
Radiation hardening techniques for neutron digital imaging FPGA
摘要
Abstract
In neutron digital imaging experiments,field programmable gate array (FPGA) is an important logic control unit for imaging.However,neutron irradiation can not only cause single event effects of FPGA,but also bring noises to neutron imaging.It is necessary to take measures to reduce the effects of neutronirradiation on FPGA imaging.In this paper,based on the periodical characteristics of images,a method of "two vote from three" instead of triplet modular redundancy is adopted to judge imaging key signals.The noises which are caused by many reasons including the single event upset(SEU) in RAM area can be smoothed by using median filter algorithm with hardware implementation.The simulation results show that two techniques and methods used in this paper not only achieve the resource redundancy and cost saving of FPGA,but also get good anti-radiation filtering effect,while preserving image details.Timing simulation and hardware platform have verified the correctness of the design.关键词
中子成像/FPGA/三判二/中值滤波/无损检测Key words
neutron imaging/FPGA/"two vote from three"/median filter/non-destructive test分类
能源科技引用本文复制引用
黄继鹏,田睿,王延杰,王连明,孟艳丽..中子数字成像FPGA抗辐照技术研究[J].强激光与粒子束,2017,29(7):54-59,6.基金项目
国家自然科学基金项目(11305034) （11305034）
吉林省科技发展计划项目(20150520084JH) （20150520084JH）
吉林省教育厅十二五科技项目(2014B042) （2014B042）
