摘要
报道了一种新型的HTcSQUID二阶梯度计心磁测量系统。这套系统通过软件算法来克服二阶梯度计使用中屏蔽室内静磁场分布不均、各磁强计磁通/电压转换系数不同的影响,大幅度抑制了50Hz工频干扰,并且只需要对数据处理算法做少量修改,便可将此方法应用到多通道高阶梯度计的系统中。
We have assembled a second-order gradiometer magnetocardiography (MCG) system in shielded environment by employing high temperature superconducting quantum interference device (SQUID) magnetometers. We used a software algorithm to avoid the influence of the non-uniform background noise and the difference of transfer coefficients of the three sensors from magnetic flux to voltage. In terms of this software gradiometer method, we could only modify the algorithm slightly to meet the need of higher order gradiometers and multi-channel systems.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2008年第A04期464-467,共4页
Rare Metal Materials and Engineering
基金
国家重点基础研究发展计划(2006CB601007)
国家自然科学基金(批准号:10674006)
国家高技术研究发展计划(2007AA03Z238)资助
关键词
MCG
二阶梯度计
软件梯度计
MCG second-order gradiometer software gradiometer