CAJ | 학술논문

介绍了一种非接触式在线核子密度测量装置，以STC12C5A60S2单片机为核心，采用光电倍增管检测衰减后的γ射线强度，提出了信号甄别与数字滤波方法，具有结构简单，运行可靠等特点，广泛应用于测量工业生产中流体、矿浆以及固体物料的密度。该装置首先对光电倍增管输出的信号进行幅度甄别，单片机对甄别后的信号进行计数和数字滤波，最后通过分段线性化计算出对应的密度。该装置可通过RS485连接至上位机，实现远程监控。
개소료일충비접촉식재선핵자밀도측량장치，이STC12C5A60S2단편궤위핵심，채용광전배증관검측쇠감후적γ사선강도，제출료신호견별여수자려파방법，구유결구간단，운행가고등특점，엄범응용우측량공업생산중류체、광장이급고체물료적밀도。해장치수선대광전배증관수출적신호진행폭도견별，단편궤대견별후적신호진행계수화수자려파，최후통과분단선성화계산출대응적밀도。해장치가통과RS485련접지상위궤，실현원정감공。
A non-contact on -line nuclear densimeter was developed .STC12C5A60S2 is used as the core , while photomultiplier tube is used to detect the radioactive rays .With the simple structure and reliable opera-tion, this densimeter is used widely in some severe environment in the factory .The signal from photomultiplier was firstly operated by signal processing circuit .The MCU then calculated the density from the signal with digit-al filtering.This densimeter contained the communication interface of RS 485 which allowing the users to ob-serve and analyze the density remotely .