门式放射性沾染检测系统设计  

Design of Door Radioactivity Contamination Detecting System

作　　者：李明亮[1] 刘泰峰[1] 王广祥[1] 

机构地区：[1]石家庄经济学院信息工程学院,河北石家庄050031

出　　处：《核电子学与探测技术》2009年第1期196-199,共4页Nuclear Electronics & Detection Technology

摘　　要：为通过探测γ射线来检测人体放射性沾染的剂量,设计了以工控机为核心、最小可探测活度为37kBq(137Cs源)的门式检测系统。系统采用中断方式自启动,对头、肩、腰、膝和脚部位进行检测,可实现超标声光报警及超标部位提示。重点探讨了光电倍增管高压调节、前置放大和甄别电路、系统可靠性、标准性及系统抗干扰等问题。系统投入使用后,具有稳定、准确及高效的特点。The door detecting system with industrial PC as its core was designed in order to detect the radioactivity contamination dose of human body, of which the least detecting activity achieved 37kBq （^137 Cs radioactivity source）. The system could accomplish auto-startup via interrupt, and could show overrun and part display through detecting head, shoulders, waists, knees and feet. It discussed the high voltage adjustment of photomultiplier tube, preamplifier and discriminate circuit, detecting system reliability, standardization and anti-jammlng in detail. It shows that the detecting system has the feature of stabilization, veracity and high efficiency.

关 键 词：Γ射线 核污染检测 工控机 抗干扰 

分 类 号：TM816[电气工程—高电压与绝缘技术]