Magnetoelastic（ ME） sensor has great application prospects in non-destructive detection

in situ and in vivo analysis due to its wireless and passive features. A miniaturized detection system for ME sensor based on MSP430 platform is designed through analysis on detection principle of ME sensor. The system uses MSP430 as control core and uses permanent magnets as bias magnetic field

it consists of AC excitation unit

RMS detection unit

AD sampling unit and communicate with the upper PC through RS—232. Experimental results indicate that the characteristics of ME sensor can be detected by the system conveniently and rapidly

which characterized by good stability

high integration

low power consumption. The system also can meet the accurate detection requirements of ME sensor in different states and environments.