吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (2): 686-692.doi: 10.13229/j.cnki.jdxbgxb201702046

• • 上一篇    

用于SERF原子磁力仪的原子气室无磁加热系统

王言章1, 2, 秦佳男1, 2, 张雪1, 2, 陈晨1, 2   

  1. 1.吉林大学 仪器科学与电气工程学院,长春 130061;
    2.吉林大学 地球信息探测仪器教育部重点实验室,长春 130061
  • 收稿日期:2016-02-02 出版日期:2017-03-20 发布日期:2017-03-20
  • 通讯作者: 陈晨(1983-),男,副教授.研究方向:弱磁检测系统技术及应用.E-mail:cchen@jlu.edu.cn
  • 作者简介:王言章(1979-),男,教授,博士生导师.研究方向:弱磁检测系统技术及应用.E-mail:yanzhang@jlu.edu.cn
  • 基金资助:
    吉林省科技厅项目(20160519023JH,20150414052GH,20140520118JH); 国家自然科学基金项目(61403160); 中国博士后科学基金项目(2014M551194).

Non-magnetism heating system for atomic gas cell used in SERF atomic magnetometer

WANG Yan-zhang1, 2, QIN Jia-nan1, 2, ZHANG Xue1, 2, CHEN Chen1, 2   

  1. 1.College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130061,China;
    2.Key Laboratory for Geophysical Exploration Equipment, Ministry of Education, Jilin University, Changchun 130061,China
  • Received:2016-02-02 Online:2017-03-20 Published:2017-03-20

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摘要： 原子气室温度是直接影响无自旋交换弛豫(SERF)原子磁力仪的测量灵敏度的重要因素,本文设计研制了一种高精度的原子气室无磁加热系统。在硬件设计中,采用PTC加热装置与Pt1000温度检测电路共同构成完整的闭环控制系统。在软件设计中,针对不同目标温度范围,分别对P、I、D三个参数完成整定。同时采用积分分离式PID控制方法,以消除超调,并通过间断加热的方式满足磁力仪检测时的极低干扰磁场要求。利用该系统进行温度控制实验,温度控制范围为80~190 ℃,温度控制精度为±0.02 ℃,稳定时间为60 s,间断加热期间产生的干扰磁场低于0.1 nT,为SERF原子磁力仪的性能提升提供了可靠保障。

关键词: 电子技术, 无自旋交换弛豫原子磁力仪, 无磁加热系统, 数字PID控制方法, 原子气室

Abstract: The temperature of atomic cell is an important factor affecting the measurement sensitivity of Spin-Exchange-Relaxation-Free (SERF) atomic magnetometer. A non-magnetism heating system with high-precision is designed and developed. In hardware design, the PTC heating device and Pt1000 temperature sensing circuit are adopted to complete the closed-lop control system. In software design, the three parameters P, I and D are set respectively for different temperatures. Meanwhile, the integral separated PID control method is used to eliminate overshoot, and an on-off heating mode is used to satisfy the requirement for ultra-low magnetic field when the magnetometer is working. Temperature control test is performed using the developed heating system. The temperature control range is 80 ℃ to 190 ℃, the accuracy is ± 0.02 ℃, and the control procedure is 60 s. In addition, the magnetic interference is less than 0.1 nT when the heating is discontinuous, which provides the reliability to promote the performance of SERF atomic magnetometer.

Key words: electronic technology, spin-exchange-relaxation-free atomic magnetometer, non-magnetism heating system, digital PID control method, atomic gas cell

中图分类号: 

  • TP271
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