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《Microcomputer Information》 2008-02
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Measurement and Display Part of a Magnetic Field Measuring Meter Based on NMR

WANG WENLI LI JINFENG WANG HONG(071002 College of Electronic and Information Engineering, Hebei University, Baoding, Hebei Province, China)  
The device measures the magnetic field based on the theory of nuclear magnetic resonance (NMR) and marginal oscillator. The measurement and display part of it takes EPM7128SLC84-6 and OM4368BN as the core components. It uses Verilog HDL and C language to design a frequency meter, the range of which is from 1MHz to 100MHz. The device can measure the oscillator frequency when the resonance occurs, get the magnetic induction based on the Larmor precession formula, and display it by the Liquid Crystal Display (LCD).The device contains an automatic range changing technology, so it can reduce the degree of manual intervention.
【Fund】: 河北省科技攻关计划资助项目(07213513D)
【CateGory Index】: TM936.2
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