| AETA 电磁扰动传感探头系统集成与测试 |
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| 引用本文： | 何春舅,雍珊珊,王新安.AETA 电磁扰动传感探头系统集成与测试[J].电子测量与仪器学报,2020,34(4):90-95. |
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| 作者姓名： | 何春舅 雍珊珊 王新安 |
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| 作者单位： | 1. 北京大学 深圳研究生院 集成微系统科学工程与应用重点实验室，2. 北京大学 深圳研究生院 地震监测预测技术研究中心 |
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| 基金项目： | 深圳市科技计划(KJYY20170721151955849)资助项目 |
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| 摘 要： | 为了研究电磁信号是否能作为一种可靠的地震前兆信号,设计了一种基于感应式磁传感器用于地震监测的电磁传感探头。该探头电路由前端信号处理电路和后端采集电路组成,可支持频段为10 Hz～10 kHz,0.1～1 000 nT较宽动态范围的甚低频、超低频电磁波段的电磁信号采集,灵敏度大于20 mV/nT@0.1 Hz～10 kHz,18位分辨率,并通过了多项可靠性测试。此外,该探头已经应用到包括川滇国家试验场在内的221个台站中的电磁监测中。现场观测实验表明,该电磁传感探头能有效捕捉到高度相关的电磁信号。
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| 关 键 词： | AETA 地震监测 电磁扰动 磁传感器 |
System integration and test of AETA electromagnetic disturbance sensing probe |
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| Affiliation: | 1. The Key Laboratory of Integrated Micro-systems, Peking University Shenzhen Graduate School,2. The Research Center of Earthquake Monitoring and Forecasting Technology, Peking University Shenzhen Graduate School, |
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| Abstract: | In order to study whether the electromagnetic signal can be used as a reliable earthquake precursor signal, an electromagnetic
sensing probe based on inductive magnetic sensor for earthquake monitoring is designed. The probe is composed of a signal processing
and an acquisition circuit, which can support electromagnetic signal acquisition in very low frequency (VLF) and ultra low frequency
(ULF) from 10 Hz~ 10 kHz in a wide dynamic range 0. 1~ 1 000 nT. The sensitivity of the probe is greater than 20 mV/ nT@ 0. 1 Hz~
10 kHz, 18-bit resolution. Besides, the probe has passed many reliability tests and has been applied to 221 stations including the
Sichuan and Yunnan National Test site for electromagnetic monitoring. Field observation experiments show that the probe can capture a
highly correlated electromagnetic signal effectively. |
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| Keywords: | AETA seismic monitoring electromagnetic disturbance magnetic sensor |
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