闪烁探测器全硬件自动检测控制电路设计  

Design of the hardware automatic detection and control circuit for scintillation detectors

作　　者：李波[1] 李晏敏[1] 赵娟[1] 李洪涛[1] 马烈华[1] 艾杰[1] 王城[1] 张波涛[1] 彭旭升[1] 李涛[1] Li Bo;Li Yanmin;Zhao Juan;Li Hongtao;Ma Liehua;Ai Jie;Wang Cheng;Zhang Botao;Peng Xusheng;Li Tao(Institute of Fluid Physics,CAEP,Mianyang 621900,China)

机构地区：[1]中国工程物理研究院流体物理研究所,四川绵阳621900

出　　处：《强激光与粒子束》2025年第3期71-75,共5页High Power Laser and Particle Beams

摘　　要：为满足中子测试装置对闪烁探测器的高可靠度要求,研制了一种全硬件自动检测控制电路。提出采用多谐振荡器产生设定时间周期的自检脉冲信号,利用比较器、单稳态触发器等电路对闪烁探测器主通道工作状态进行实时监测和判断,在主通道故障时通过模拟开关实现主通道信号和备用通道信号之间进行自动切换控制。解决了目前自动检测控制电路实现通道切换输出电路复杂、体积大、辐射环境适应性较差等问题,实现了闪烁探测器通道的冗余设计,提高了闪烁探测器的工作可靠度。该电路成功使探测器工作可靠度达到99.9%以上,满足了实验要求。To satisfy high reliability requirements of scintillation detectors in neutron testing devices,an all-hardware automatic detection and control circuit had been developed.We proposed to use a multivibrator to generate self-checking pulse signal with a certain period of time,and use comparator,monostable flip-flop and other circuits to monitor and judge the working state of the main channel of scintillation detector in real time.The automatic switching control between the main channel signal and the standby channel signal was realized by analog switch.We have solved the problems such as complex output circuit,large volume and poor adaptability to radiation environment in the current automatic detection and control circuit,realized redundant design of scintillation detector channels,and improved the working reliability of scintillation detector.The circuit was successfully used in general telemetry probe and met the experimental requirements well.

关 键 词：闪烁探测器 全硬件电路 自动检测控制电路 高可靠度 

分 类 号：TM836[电气工程—高电压与绝缘技术]