原子分光光度计元素灯数据采集系统  

Atomic Spectrophotometer Element Lamp Light Acquisition System

作　　者：封岸松 苏晓雪 李世兴[2] FENG Ansong;SU Xiaoxue;LI Shixing(School of Information Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China;Fire Control System R&D Department, North Institute of Automatic Control Technology, Taiyuan 030006, China)

机构地区：[1]沈阳化工大学,信息工程学院,辽宁沈阳110142 [2]北方自动控制技术研究所,防控火控系统研发部,山西太原030006

出　　处：《微型电脑应用》2022年第6期65-68,共4页Microcomputer Applications

基　　金：工业无线HART网络管理研究(20180550128)。

摘　　要：针对原子分光光度计检测数据不准确的问题,将主要产生干扰的部分进行了改进。改进了前置放大电路中的滤波电路,针对余光的干扰问题增加了调零电路。经过调试之后的实验结果与仿真结果之间存在误差,但并不影响实验结果的判定,在允许范围内。实验结果表明本次设计可以将光电倍增管检测出的信号准确的放大并转换成数字信号传给上位机。In order to solve the problem of inaccurate data detected by atomic spectrophotometer,the main interference part is improved.The filter circuit of preamplifier is improved,and the zero adjusting circuit is added to solve the interference problem of residual light.There is an error between the experimental results and the simulation results after debugging,but it does not affect the judgment of the experimental results,which is within the allowable range.The experimental results show that the signal detected by the photomultiplier tube can be amplified accurately and converted into digital signal and transmitted to the host computer.

关 键 词：嵌入式系统 光电倍增管 跨阻电路 PGA281 调零电路 

分 类 号：TP274+.2[自动化与计算机技术—检测技术与自动化装置]