建材放射性脉冲检测及其能量刻度设计

J4 ›› 2011, Vol. 29 ›› Issue (03): 271-.

建材放射性脉冲检测及其能量刻度设计

吉林大学 a仪器科学与电气工程学院； b地球信息探测仪器教育部重点实验室|长春 130026

出版日期:2011-05-20 发布日期:2011-06-27
通讯作者: 凌振宝（1966— ），男，河北唐山人，吉林大学教授，硕士，硕士生导师，主要从事传感器与智能仪器研究，(Tel)86-13180819300 E-mail:lingzhenbao@jlu.edu.cn。
作者简介:凌振宝（1966— ）|男|河北唐山人|吉林大学教授| 硕士| 硕士生导师|主要从事传感器与智能仪器研究|(Tel)86-13180819300 (E-mail)lingzhenbao@jlu.edu.cn。
基金资助:
吉林大学大学生创新实验计划基金资助项目(2011A65101)

Design of Radioactive Pulse Detection and Energy Calibration of Building Materials

aCollege of Instrumentation and Electrical Engineering；
bKey Laboratory of GeoExploration and Instrumentation of Education Ministry, Jilin University, Changchun 130026, China

Online:2011-05-20 Published:2011-06-27

摘要/Abstract

摘要：

为对建材放射性进行检测，设计了基于光电倍增管的建材放射性脉冲检测及其能量刻度系统。系统包括光电倍增管检测、放射性脉冲调理电路及集成12位A/D的单片机MSP430F1612对放射性脉冲峰值的采样电路。该系统将单片机处理的数据通过RS232串口传送至上位机，上位机采用Visual Basic 6.0软件对数据进行滤波拟合寻峰，通过获得的能量分析了建材中含有的放射性元素及其能量范围。系统较精确地实现了能量的刻度、自动寻峰和手动寻峰等，能准确判断的能量范围为0.01~2.97 MeV。实现了现场对建材放射性的检测，具有很大的实用性和便携性。

关键词: 光电倍增管, 峰值采样, 滤波拟合, 能量刻度

Abstract:

In order to detect radioactive materials, the pulse detection of radioactive materials and energy calibration, are designed based on the photomultiplier. The system includes photomultiplier detector, the radioactive pulse conditioning circuit and the circuit of MCU MSP430F1612, which has 12bit A/D inside, to sample the peak of radioactive pulse and so on. The data through the Single chip microcomputer dealing will be transmitted to PC through the RS232 serial port. The PC uses the Visual Basic 6.0 software to filter and fit the data in order to search the peak. Analyzed the building materials have which radioactive element contained and it is energy range by the obtained energy.This system is much more accurate to achieve the energy scale,automatic and manual peak search,which could accurately determine the energy between 0.01 to 2.97 MeV.The system has realized the detection of radioactive materials on the scene.

Key words: photomultiplier, peak sampling, filter fitting, energy calibration.

中图分类号:

TM93

凌振宝|黄健祥|吴树军|曾然|曹桂欣. 建材放射性脉冲检测及其能量刻度设计[J]. J4, 2011, 29(03): 271-.

LING Zhen-bao|HUANG Jian-xiang|WU Shu-jun|ZENG Ran| CAO Gui-xin. Design of Radioactive Pulse Detection and Energy Calibration of Building Materials[J]. J4, 2011, 29(03): 271-.