Design of the hardware automatic detection and control circuit for scintillation detectors
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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。Abstract: 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.
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[1] 汲长松. 核辐射探测器及其实验技术手册[M]. 北京: 原子能出版社, 1993Ji Changsong. Handbook of nuclear radiation detectors and their experimental techniques[M]. Beijing: Atomic Energy Press, 1993 [2] 李波, 李涛, 李晏敏, 等. 闪烁探测器线路板可靠性设计[J]. 通信电源技术, 2022, 39(4):42-46Li Bo, Li Tao, Li Yanmin, et al. Reliability design for the circuit board of the scintillation detector[J]. Telecom Power Technology, 2022, 39(4): 42-46 [3] 彭太平, 罗小兵, 张传飞, 等. 塑料闪烁体中子探测效率及相对发光产额的标定[J]. 原子核物理评论, 2002, 19(3):357-360 doi: 10.3969/j.issn.1007-4627.2002.03.011Peng Taiping, Luo Xiaobing, Zhang Chuanfei, et al. Study on calibration of neutron efficiency and relative photo-yield of plastic scintillator[J]. Nuclear Physics Review, 2002, 19(3): 357-360 doi: 10.3969/j.issn.1007-4627.2002.03.011 [4] 艾杰, 代红跃, 文延伟, 等. 可在恶劣环境下工作的塑料闪烁探测器研究[J]. 核电子学与探测技术, 2009, 29(3):558-560 doi: 10.3969/j.issn.0258-0934.2009.03.017Ai Jie, Dai Hongyue, Wen Yanwei, et al. Study on plastic scintillation detector used in very terrible environments[J]. Nuclear Electronics & Detection Technology, 2009, 29(3): 558-560 doi: 10.3969/j.issn.0258-0934.2009.03.017 [5] 魏宇航, 魏志勇, 牛志, 等. 中子探测器的研究现状与发展趋势[J]. 科学技术创新, 2019(34):28-29Wei Yuhang, Wei Zhiyong, Niu Zhi, et al. Research status and development trend of neutron detector[J]. Scientific and Technological Innovation, 2019(34): 28-29 [6] 谷颖. 位置灵敏型快中子闪烁体探测器[D]. 北京: 华北电力大学, 2022Gu Ying. Position sensitive fast neutron scintillation detector[D]. Beijing: North China Electric Power University, 2022 [7] Seagondollar L W, Esch K A, Cartwright L M, et al. A scintillation detector for fast neutrons[J]. Review of Scientific Instruments, 1954, 25(7): 689-691. doi: 10.1063/1.1771160 [8] 范锐锋, 马景芳, 艾杰, 等. 双通道闪烁探测器探测脉冲中子技术[J]. 核电子学与探测技术, 2007, 27(6):1054-1056,1060 doi: 10.3969/j.issn.0258-0934.2007.06.013Fan Ruifeng, Ma Jingfang, Ai Jie, et al. Pulsed neutron detection using double-channels scintillant detector[J]. Nuclear Electronics & Detection Technology, 2007, 27(6): 1054-1056,1060 doi: 10.3969/j.issn.0258-0934.2007.06.013 [9] 姚永刚, 邓长明, 李建伟, 等. 改进型闪烁体探测器信号处理电路设计[J]. 核电子学与探测技术, 2014, 34(10):1226-1230 doi: 10.3969/j.issn.0258-0934.2014.10.017Yao Yonggang, Deng Changming, Li Jianwei, et al. Design of improved signal processing circuit based on scintillation detector[J]. Nuclear Electronics & Detection Technology, 2014, 34(10): 1226-1230 doi: 10.3969/j.issn.0258-0934.2014.10.017 [10] 岳秀萍, 黄河, 唐彬, 等. 基于硅光电倍增管的闪烁体中子探测器[J]. 电子技术与软件工程, 2022(24):69-72Yue Xiuping, Huang He, Tang Bing, et al. Scintillator neutron detector based on silicon photomultiplier tube[J]. Electronic Technology & Software Engineering, 2022(24): 69-72 [11] 耿涛. 用于DPF装置中子测量的闪烁体探测器[J]. 强激光与粒子束, 2007, 19(6):1008-1010Geng Tao. Scintillation neutron detector for DPF device[J]. High Power Laser and Particle Beams, 2007, 19(6): 1008-1010 [12] 马烈华, 龙继东, 陈永涛, 等. 基于高压模块供电的MCP-PMT高压击穿故障分析及设计改进[J]. 强激光与粒子束, 2022, 34:095007 doi: 10.11884/HPLPB202234.210475Ma Liehua, Long Jidong, Chen Yongtao, et al. Analysis and design improvement of MCP-PMT high-voltage breakdown fault based on high voltage module power supply[J]. High Power Laser and Particle Beams, 2022, 34: 095007 doi: 10.11884/HPLPB202234.210475 -
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