物理学报Issue(22)：418-423,6.DOI:10.7498/aps.63.228501
多通道心磁系统标定方法研究
Multi-channel magnetocardiogardiography system calibration
摘要
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.关键词
超导量子干涉器件/磁探测/磁场-电压转换系数/系统标定Key words
superconducting quantum interference device/magnetic detect/field-to-voltage transfer coefficient/calibration of system channels引用本文复制引用
张永升,邱阳,张朝祥,李华,张树林,王永良,徐小峰,丁红胜,孔祥燕..多通道心磁系统标定方法研究[J].物理学报,2014,(22):418-423,6.基金项目
中国科学院知识创新工程重要方向项目(批准号：KGCX2-EW-105)和中国科学院“百人计划”项目资助的课题.* 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 （批准号：KGCX2-EW-105）
