Three-shaft magnetic field sensing device with magnetic flux guide

Abstract

The invention discloses a three-shaft magnetic field sensing device with a magnetic flux guide. Four outer sides of the magnetic flux guide are respectively provided with a first, a second, a third, and a fourth magnetic field sensor, and a first imaginary panel respectively passes through the sensing shafts of the first and the second magnetic field sensor and the magnetic flux guide. A second imaginary panel respectively passes through the sensing shafts of the third and the fourth magnetic field sensor and the magnetic flux guide. One control unit set is respectively and electrically connected to the first, the second, the third, and the fourth magnetic field sensor. The control unit set controls the sensing direction of each magnetic field sensor, so that the magnetic field sensor can measure the magnetic-field component in each shaft direction, and through the configuration of each magnetic field sensor, the field spot measured at the X-axis and Y-axis of the magnetic field sensing device can be at the same position. Accordingly, the result measured by the magnetic field sensing device can be closer to the measuring result of actual observation.

Description

technical field [0001] The invention relates to an instrument for measuring magnetic field, especially a three-axis magnetic field sensing device with a magnetic flux guide. Background technique [0002] Generally, we often use a compass to measure the magnetic field direction (such as the north-south direction of the geomagnetic field) of an observation point, but this method cannot measure the magnetic field strength. Therefore, someone has designed a magnetic field sensing device, which can not only measure the magnetic field direction of the observation point, but also measure the magnetic field components of the observation point in each axis. [0003] Please refer to U.S. Patent US6304082. The three-axis magnetic field sensing device disclosed in this patent is to install three single-axis magnetic field sensing devices in three different positions, and can measure the X-axis, Y-axis, and Z-axis respectively. Finally, the magnetic field direction of an observation poi...

AI Technical Summary

Problems solved by technology

However, this kind of three-axis magnetic field sensing device is not only difficult to control the orthogonal angle, but also the positions of the field points measured by each magnetic field sensing device for each axis are different, resulting in this three-axis The results measured by the magnetic field sensing device are not the magnetic field components of the actual observation point in each axis

Images