Five-point three-dimensional magnetic field measurement device based on board stretching pyromagnetic effect

The invention discloses a five-point three-dimensional magnetic field measurement device based on board stretching pyromagnetic effect. The five-point three-dimensional magnetic field measurement device comprises a microcontroller, five magnetic sensors, a multiplexer, an analog to digital converter, a hysteresis effect cancellation circuit and a serial communication circuit. The magnetic sensors are symmetrically arranged on five points on the front face of a PCB (printed circuit board). Each magnetic sensor is provided with three signal output channels used for inputting magnetic induction signals of the three directions of x, y and z. The magnetic sensors are connected with an input port of the microcontroller through the multiplexer and the analog to digital converter. An output port of the hysteresis effect cancellation circuit is connected with pulse polarization circuits in the magnetic sensors. The microcontroller is connected with an upper computer through the serial communication circuit. By the fiv