Title :
Research of weak signal conditioning measurement method
Author :
Ge, Ziqiang ; Dong, Haobin ; Tan, Chao
Author_Institution :
Fac. of Mech. & Electron. Inf., China Univ. of Geosci., Wuhan, China
Abstract :
For improving the measuring accuracy and stability of weak magnetic signal of sensor output, based on principles of the proton magnetometer, signal detecting conditioning circuit used analog circuits technology is designed. The feasibility of conditioning circuit is analyzed, the measured data is obtained. In current conditions, The results showed that the signal to noise ratio achieved 30dB.It can measure geomagnetic field in precision and mobile mode. And the error is less than 2nT.
Keywords :
analogue-digital conversion; signal processing equipment; stability; analog circuits technology; geomagnetic field; magnetic signal stability; mobile mode; proton magnetometer; sensor output signal; weak signal conditioning measurement method; Analog circuits; Circuit analysis; Circuit stability; Magnetic circuits; Magnetic field measurement; Magnetic sensors; Magnetometers; Protons; Signal design; Signal detection; conditioning; geomagnetic field; weak signal;
Conference_Titel :
Mechanic Automation and Control Engineering (MACE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-7737-1
DOI :
10.1109/MACE.2010.5535841
