氡室^(222)Rn/^(220)Rn采样的实时监测与控制系统设计  

Design of Real-Time Monitoring and Control sytem of ^(222)Rn/^(220)Rn sampling for Radon chamber

作　　者：吴荣燕[1] 赵修良[1] 张美琴[1] 俞红[1] 

机构地区：[1]南华大学核科学技术学院,湖南衡阳421001

出　　处：《核电子学与探测技术》2008年第4期778-782,共5页Nuclear Electronics & Detection Technology

摘　　要：提出了以Intel 51系列单片机为控制核心的222Rn/220Rn采样监测与控制系统设计方案。硬件部分对传感器、A/D转换器件、USB芯片、键盘和数码显示芯片、光耦隔离与直流泵驱动芯片的选择和使用进行了详细介绍,并给出了电路设计简图;软件部分包括上下位机软件,分别通过Visual Basic语言和汇编语言实现数据采集转换及直流泵流量控制,并采用PID控制算法对泵流量稳定性进行改善,给出了程序流程图。This paper describes the design of ^222 Rn/^220Rn sampling monitoring and control system based on single-chip microcomputer of series Intel51. The hardware design involves the choosing and usage of sensors-chips, A/D conversion-chip 、 USB interface-chip 、 keyboard-chip 、 digital display-chip, photoelectric coupling isolation-chips and drive circuit-chips of the direct current pump. Software design is composed by software of Personal Computer （PC） and software of Single Chip Microcomputer （SCM）. The data acquisition and conversion and the flux control of direct current pump are realized by using soft of Visual Basic and assemble language. The program flow charts are given. Furthermore, we improved the stability of the direct current pump by means of PID Control Algorithms.

关 键 词：单片机 ^222Rn/^220Rn采样 氡室 PWM PID 

分 类 号：TL8[核科学技术—核技术及应用]