Mortars Against The System Research To Reload Again

Mortar has been extremely important to infantry as regular weapons to suppressopponents effectively in coordinated operations. In the course of mortar liveammunition, there was the failure of firing resulted from the failure of firing pin in thebottom and damp cartridge bag. Pour bomb should be operated to reload launch whenthe abnormal launched cannonball stayed in the barrel. Repetitive loading wasextremely dangerous for the exploding will occur at any time, causing great damages toboth people and cannons.Aiming at repetitive loading problems existing in the mortar, micro magnetictesting was proposed as a new detection method. Firstly, the working principle offluxgate sensor was introduced, the mathematical model of fluxgate was alsoestablished. Subsequently, using cobalt-based amorphous alloy as the magnetic core, thefluxgate sensor and the corresponding circuit were designed. The performance of thedetection device was tested as well. Thirdly, the hardware system of the micro magneticdetection device for preventing repetitive loading was designed, which can convertsgeomagnetic disturbance caused by cannonballs to electrical signals through using a32-bit ARM microprocessor LPC2368as the core of the system. Fourthly, the softwarewas also designed with C language, which can achieve the aim of monitoring theinformation of cannonballs by adopting algorithm of state machine in stages combinedwith the threshold algorithm. Finally, the stereo type and debugging of the device werecompleted through lots of indoor and field tests. The test of live firing showed that thedevice has high accuracy, good stability, strong anti-interference capability, convenientassembly, the expected requirements of design parameters were achieved.