At present

application of magnetic field sensor in industrial production site often takes the form of explosion-proof

EDM and other methods

so it has certain limitations in field application

but magnetoelectric inductive electrostriction type magnetic field sensor using fiber Bragg grating（ FBG） as sensing element can increase range of applications in industrial production to a certain extent

because of its anti electromagnetic interference

strong insulation resistance property. According to working principle of electrostriction type FBG magnetic field sensor

through measuring shift amount of center wavelength

measured magnetic field can be calculated

magnetic field can be real-time monitored. Test results show that the sensitivity of the magnetic sensor is 0. 113 pm / Gs

nonlinear error is 5. 45 % FS

it can well meet the application of industrial production field.