Design and implementation of JOM-3 Overhauser magnetometer analog circuit

Xiao Zhang; Xue Jiang; Jianchang Zhao; Shuang Zhang; Xin Guo; Tingting Zhou

doi:10.1117/12.2271728

5 September 2017 Design and implementation of JOM-3 Overhauser magnetometer analog circuit

Xiao Zhang, Xue Jiang, Jianchang Zhao, Shuang Zhang, Xin Guo, Tingting Zhou

Proceedings Volume 10402, Earth Observing Systems XXII; 104022D (2017) https://doi.org/10.1117/12.2271728
Event: SPIE Optical Engineering + Applications, 2017, San Diego, California, United States

Abstract

Overhauser magnetometer, a kind of static-magnetic measurement system based on the Overhauser effect, has been widely used in archaeological exploration, mineral resources exploration, oil and gas basin structure detection, prediction of engineering exploration environment, earthquakes and volcanic eruotions, object magnetic measurement and underground buried booty exploration. Overhauser magnetometer plays an important role in the application of magnetic field measurement for its characteristics of small size, low power consumption and high sensitivity. This paper researches the design and the application of the analog circuit of JOM-3 Overhauser magnetometer. First, the Larmor signal output by the probe is very weak. In order to obtain the signal with high signal to noise rstio(SNR), the design of pre-amplifier circuit is the key to improve the quality of the system signal. Second, in this paper, the effectual step which could improve the frequency characters of bandpass filter amplifier circuit were put forward, and theoretical analysis was made for it. Third, the shaping circuit shapes the amplified sine signal into a square wave signal which is suitable for detecting the rising edge. Fourth, this design elaborated the optimized choice of tuning circuit, so the measurement range of the magnetic field can be covered. Last, integrated analog circuit testing system was formed to detect waveform of each module. By calculating the standard deviation, the sensitivity of the improved Overhauser magnetometer is 0.047nT for Earth’s magnetic field observation. Experimental results show that the new magnetometer is sensitive to earth field measurement.

Citation Download Citation

Xiao Zhang, Xue Jiang, Jianchang Zhao, Shuang Zhang, Xin Guo, and Tingting Zhou "Design and implementation of JOM-3 Overhauser magnetometer analog circuit", Proc. SPIE 10402, Earth Observing Systems XXII, 104022D (5 September 2017); https://doi.org/10.1117/12.2271728

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
10 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Magnetometers

Magnetism

Analog electronics

Remote sensing

Switches

Earthquakes

Environmental sensing

Show All Keywords

Keywords/Phrases

Search In:

Publication Years