Multi-channel magnetocardiogardiography system calibration

Zhang Yong-Sheng; Qiu Yang; Zhang Chao-Xiang; Li Hua; Zhang Shu-Lin; Wang Yong-Liang; Xu Xiao-Feng; Ding Hong-Sheng; Kong Xiang-Yan

doi:10.7498/aps.63.228501

Abstract

The field-to-voltage transfer coefficient (∂ B/∂ V) is an important parameter of the multi-channel superconducting quantum interference device (SQUID) magnetic detecting system. The SQUID devices and the readout circuits have the inevitable differences among different channels, so the accurate calibration of system channels is rather significant. In this paper, We first used the circular PCB coils for 36-channel MCG system calibration, and the other one is based on a traditional method in which a uniform field is produced by square Helmholtz coil. The calibration data show that the results are basically the same. The calibrated ∂ B/∂ V values using circular PCB coils are in a range from 1.46-1.73 pT·mV-1. And those of square Helmholtz coils are mostly within a range from 1.56-1.64 pT·mV-1.

Keywords:

Authors and contacts

1.
Department of Physics, University of Science and Technology, Beijing 100083, China;
2.
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China
Funds: Project supported by the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. KGCX2-EW-105), and the One Hundred Person Project of the Chinese Academy of Sciences.

References

[1]	John C, Alex I B 2004 The SQUID Handbook Vol.1 Fundamentals and Technology of SQUIDs and SQUID Systems (Weinheim: Wiley-Vch Verlag GmbH & Co. KGaA) p137
[2]	Zhang S L, Zhang G F, Wang Y L, Liu M, Li H, Qiu Y, Zeng J, Kong X Y, Xie X M 2013 Chin. Phys. B 22 128501
[3]	Kong X Y, Zhang S L, Wang Y L, Zeng J, Xie X M 2012 Phys. Procedia 36 286
[4]	Brisinda D, Meloni A M, Fenici R 2004 Neurology and Clinical Neurophysiology 2004 8
[5]	Ornelas P H, Bruno A C, Barbosa Hall C, Andrade Lima E, Costa Ribeiro P 2003 Supercond Sci Technol 16 427
[6]	Lee S G, Kang C S, Chang J W 2007 IEEE Trans. Appl. Supercond. 17 2
[7]	Alldred J C, Scollar I 1967 J. Sci. Instrum. 44 755
[8]	Tan X, Liu J, Yin J L, Li Q D 2011 J. Magn. Mater. Dev. 43 52 (in Chinese) [谭曦, 刘军, 殷建玲, 李清东 2011 磁性材料与器件 43 52]

Cited By

[1]	John C, Alex I B 2004 The SQUID Handbook Vol.1 Fundamentals and Technology of SQUIDs and SQUID Systems (Weinheim: Wiley-Vch Verlag GmbH & Co. KGaA) p137
[2]	Zhang S L, Zhang G F, Wang Y L, Liu M, Li H, Qiu Y, Zeng J, Kong X Y, Xie X M 2013 Chin. Phys. B 22 128501
[3]	Kong X Y, Zhang S L, Wang Y L, Zeng J, Xie X M 2012 Phys. Procedia 36 286
[4]	Brisinda D, Meloni A M, Fenici R 2004 Neurology and Clinical Neurophysiology 2004 8
[5]	Ornelas P H, Bruno A C, Barbosa Hall C, Andrade Lima E, Costa Ribeiro P 2003 Supercond Sci Technol 16 427
[6]	Lee S G, Kang C S, Chang J W 2007 IEEE Trans. Appl. Supercond. 17 2
[7]	Alldred J C, Scollar I 1967 J. Sci. Instrum. 44 755
[8]	Tan X, Liu J, Yin J L, Li Q D 2011 J. Magn. Mater. Dev. 43 52 (in Chinese) [谭曦, 刘军, 殷建玲, 李清东 2011 磁性材料与器件 43 52]

姓名
邮箱
手机号码
标题
留言内容
验证码

Search

Article

留言板