基于双半导体制冷器的谐振式露点仪主控温系统设计  

Design of main temperature control system of resonant dew point meter based on double TEC

作　　者：白雪松 王国华[1] 刘嘉 李宁[3] 任明虎 聂晶[4] BAI Xuesong;WANG Guohua;LIU Jia;LI Ning;REN Minghu;NIE Jing(School of Instrumentation and Optoelectronic Engineering,Beihang University,Beijing 100191,China;School of Computer Science and Engineering,Zhengzhou University of Light Industry,Zhengzhou 450002,China;School of Electronic Information Engineering,Beihang University,Beijing 100191,China;Research Institute for Frontier Science,Beihang University,Beijing 100191,China)

机构地区：[1]北京航空航天大学仪器科学与光电工程学院,北京100191 [2]郑州轻工业大学计算机学院,河南郑州450002 [3]北京航空航天大学电子信息工程学院,北京100191 [4]北京航空航天大学前沿科学技术创新研究院,北京100191

出　　处：《计测技术》2022年第2期73-78,共6页Metrology & Measurement Technology

基　　金：国家“十四五”基础科研项目(JCKY2021601B011)。

摘　　要：针对高精度石英谐振式露点仪中所涉及的露点温度双闭环跟踪控制的问题,本文提出了一种基于双半导体制冷器的主控温系统,该系统采用STM32作为主控芯片,利用PID控制算法通过DAC分别对两路半导体制冷器进行驱动和温度跟随控制。该系统在-15~15℃温度范围内进行了控温效果试验,结果显示该主控温系统线性制冷速率误差不高于10%,连续线性控温精度高,可为基于双制冷面的高精度石英谐振式露点仪实现双闭环露点跟踪测量提供有效的温控解决方案。Aiming at the problem of double closed-loop tracking control of dew point temperature in high-precision quartz resonant dew point meter,a temperature control system of resonant dew point meter based on double semiconductor cooler was proposed.The system uses STM32 as the main control chip and uses PID control algorithm to drive and follow the temperature of two semiconductor coolers through DAC.The temperature control system is tested in the temperature range of-15~15℃.The results show that the linear cooling rate error of the main temperature control system is no more than 10%,and the continuous linear temperature control precision is high.It can provide an effective temperature control solution for the high-precision quartz resonant dew point meter based on double cooling surfaces to realize double closed-loop dew point tracking measurement.

关 键 词：谐振式露点仪 双半导体制冷器 线性电压型驱动 位置式PID 

分 类 号：TB943[一般工业技术—计量学]