Rotating cut magnetic sensor line-differential linear hall slightly weak magnetic field detector

This study was measured as the actual measurement value calculated through the coil and Hall components, and the weak magnetic field generated by the three coils with a voltage of 200 turns was measured. First of all, calculate the theoretical magnetic field value through the strength of the magnetic field source and the K value; then, the difference in the difference in calculation by detecting the difference between the actual magnetic field strength and theoretical value, and compare the difference in the difference with the theoretical value of the magnetic field. The error range is 3.03% - 5.56%. Because the distance between the measurement point and the magnetic field source is 14.32 cm, the magnetic field attenuation effect is available, which further derives a dynamic K value, and considers other influencing factors except R. This study provides effective methods and theoretical support for the measurement of a weak magnetic field.