Title Design of permanent magnet electromagnetic induction sensor
Abstract
The muzzle velocity of the projectile is an important indicator of performance assessment of the guns,it is the important parameters of the weapon system development , production and verification .In order to solve the disadvantage of the excitation coil target and the induction coil target, which commonly used in the projectile velocity measurement ,a new type of permanent magnet induction coil target was designed in this paper.It was used the permanent magnet to replace the excitation coil for producing a constant magnetic field,and designed a low-power amplifie with AD620 ,which used a 9V battery to supply power, and it solved the disadvantage of the weak signal is ssusceptible to interference in the remote transmission. Using this coil target combined with data acquisition devices to set up a test system to test the performance of the permanent magnet induction coil target ,the results shows the signal was large and it has a strong anti-jamming capability.