| HT_c SQUID软件梯度计研究 |
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| 引用本文： | 王勋,齐亮,焦洁青,马平,聂瑞娟,王福仁,戴远东.HT_c SQUID软件梯度计研究[J].稀有金属材料与工程,2008(Z4). |
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| 作者姓名： | 王勋 齐亮 焦洁青 马平 聂瑞娟 王福仁 戴远东 |
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| 作者单位： | 北京大学人工微结构和介观物理国家重点实验室; |
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| 基金项目： | 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 |
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| 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。
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| 关 键 词： | MCG 二阶梯度计 软件梯度计 |
Research on Software Gradiometer Applied to HT_c SQUID |
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| Wang Xun,Qi Liang,Jiao Jieqing,Ma Ping,Nie Ruijuan,Wang Furen,Dai Yu,ong.Research on Software Gradiometer Applied to HT_c SQUID[J].Rare Metal Materials and Engineering,2008(Z4). |
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| Authors: | Wang Xun Qi Liang Jiao Jieqing Ma Ping Nie Ruijuan Wang Furen Dai Yu ong |
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| Affiliation: | Wang Xun,Qi Liang,Jiao Jieqing,Ma Ping,Nie Ruijuan,Wang Furen,Dai Yu,ong (State Key Laboratory for Artificial Microstructure , Mesoscopic Physics,Peking University,Beijing 100871,China) |
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| Abstract: | 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 gradio... |
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| Keywords: | MCG second-order gradiometer software gradiometer |
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