Spatial information detection system and the detection method as well as the spatial information detecting device

摘要

The present invention can be measured continuously using an alternating magnetic field, the degree of freedom of the setting of frequency is large, the configuration is simple on spatial information detecting system. The magnetic sensor unit (23) drives (21) the magnetic sensor through a multiplexer unit (22). Is converted from an analog signal to a digital signal, the signal of the magnetic sensor is sent to the operation unit (3) as magnetic data from the data transmitting unit (26). Fourier transform unit (32) calculates the amplitude and phase of the frequency components in the plurality of individual axes from the output signal the magnetic data receiving unit (31). Calculating a sign for the amplitude of the respective axes from the phase relationships of the plurality of frequency components of individual axes from the output signal Fourier transform unit from (32), the magnetic field vector calculating unit (33), the size and direction of the magnetic field from the amplitude and the sign I calculates the vector of the magnetic field is representing. To calculate the direction information terminal (2) (34) direction calculator.