| Issue |
MATEC Web Conf.
Volume 327, 2020
2020 4th International Conference on Measurement Instrumentation and Electronics (ICMIE 2020)
|
|
|---|---|---|
| Article Number | 01002 | |
| Number of page(s) | 5 | |
| Section | Modern Sensors and Detection Technology | |
| DOI | https://doi.org/10.1051/matecconf/202032701002 | |
| Published online | 06 November 2020 | |
Study on the Technology of Ultra-high Sensitive Wide-band Magnetic-feedback Inductive Magnetic Sensor
1 LF Electromagnetic Communication Laboratory, Wuhan Maritime Communication Research Institute, 430205 Wuhan, China
* Corresponding author: 13886062187@139.com
It analyses the composition and principle of high-sensitive wide-band magnetic-feedback inductive magnetic sensor to fulfil the demand of high-sensitive wide-band magnetic sensor in geological exploration. It studies main factors to the performance of wide-band magnetic sensor, such as turns of coils, core material features, and amplifier noise, specifies section-wise coil winding, the type and dimension of core material, and designs low-noise high-impedance LF chopping amplifier channel and composite amplifier with HF amplifier channel. The noise of magnetic sensor at 1 Hz is better than 10-4nT/Hz1/2, at 100Hz-1kHz band the noise floor is close to SQUID which can reach 10-6nT/Hz1/2. The magnetic sensor works at wide frequency band (0.0001Hz-10kHz) and ultra-low noise, which can meet the requirements of both AMT and CSAMT.
© The Authors, published by EDP Sciences, 2020
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