Magnetic proximity fuze detection system which based on magnetic sensor is suitable for non-contact detection system. To enhance range of detection and stability

controllable amplifier filtering circuit and set-reset circuit are designed for the system. In order to improve timeliness and accuracy of detection

improved filtering algorithm and detection algorithm is proposed. System which is improved and optimized has good stability and adaptability

and it effectively detects moving of ferromagnetic objects

feasibility of the scheme is proved

and lay foundation for future studies.