Signal-to-noise improvement of bio-magnetic signals using a flux-gate probe and real time signal processing
Signal-to-noise improvement of bio-magnetic signals using a flux-gate probe and real time signal processing
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DOI：
10.1063/1.1149158
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发表时间：
1998-10-01
影响因子：
1.6
通讯作者：
Robbes, D
中科院分区：
文献类型：
--
作者：
Dolabdjian, C;Saez, S;Robbes, D
在非常灵敏的磁通门传感器的帮助下，我们记录了人类心肌产生的磁信号。首先，我们在磁屏蔽的房间里验证了这种探测的可行性，然后在我们的实验室和低屏蔽的环境中重复了同样的实验。结果表明，磁通门传感器操作简单，在低屏蔽环境下进行快速数值处理是有效的。这在两种情况下都导致在100赫兹带宽内的电压信噪比约为5，这对应于磁通门探头的实际限制。(C)1998年美国物理研究所。[S0034-6748(98)03610-7]。
We have recorded the magnetic signal generated by the human cardiac muscle with the help of a very sensitive flux-gate sensor. First, we have verified the feasibility of such detection inside a magnetically shielded room, then repeated this same experiment within our laboratory and in a low shielded environment. Results have shown the easy operation of a flux-gate sensor for this purpose and the efficiency of fast numerical processing in a low shielded environment. This leads in both cases to a voltage signal-to-noise ratio of about 5 within a 100 Hz bandwidth, which corresponds to the actual limit of the flux-gate probe. (C) 1998 American Institute of Physics. [S0034-6748(98)03610-7].