大升压比小型化辉光放电恒流源的研制与应用  

Development and application of a miniaturized glow discharge constant current source with high boost ratio

作　　者：白金超 王占扩[1] 陈吉文 Bai Jinchao;Wang Zhankuo;Chen Jiwen(College of Electrical and Control Engineering,North China University of Technology,Beijing 100144,China)

机构地区：[1]北方工业大学电气与控制工程学院,北京100144

出　　处：《分析仪器》2023年第4期1-5,共5页Analytical Instrumentation

基　　金：科技部重点研发计划(2021YFF0700102)。

摘　　要：针对小型化设计需求,基于推挽-倍压整流双级升压结构,设计了一套大升压比辉光放电恒流源。电路舍弃了传统LC滤波结构的大体积滤波电感和电容,通过将各功能模块进行了集成设计,整体实现了小型化。此外,通过并采用场效应晶体管(MOSFET)作为恒流调整器件,配合精密运算放大器和DAC,电路整体实现了辉光放电恒流源的恒流调节功能。经光谱仪应用验证,测得标钢样品中Cu、C、Si、Ni、Cr、Mn元素光谱强度数据的相对标准偏差(RSD)低于2.33%,Cu、C、Ni、Cr、Mn元素光谱强度的线性拟合优度R~2均高于0.95,分析效果良好。In order to meet the requirements of miniaturization design,a source with high booster ratio is designed based on push-pull and double voltage rectifier two-stage booster structure.The circuit abandons the large volume filter inductance and capacitance of the traditional LC filter structure,and realizes the miniaturization by integrating various function modules.In addition,MOSFET is used as constant-current adjusting device,combined with precision operational amplifier and DAC,the circuit realizes constant-current adjusting function of glow discharge constant current source.The relative standard deviation(RSD)of the spectral intensities of Cu,C,Si,Ni,Cr and Mn elements in the standard steel sample is lower than 2.33%,and the linear goodness of fit R2 of the spectral intensities of Cu,C,Ni,Cr and Mn elements is all higher than 0.95.The analysis effect is good.

关 键 词：辉光放电 推挽变换器 高压恒流源 倍压整流 

分 类 号：TH744.1[机械工程—光学工程]