Fluxgate sensor with three components on same point

Abstract

The invention discloses a fluxgate sensor with three components on the same point. The fluxgate sensor comprises an aluminum shell, a circuit board, a magnetic core, ceramic frameworks and coils, wherein the circuit board and the magnetic core are arranged in the aluminum shell; the coils are wound on the ceramic frameworks; three sensors correspond to the three components; the two components share the magnetic core to form an annular structure; the third component is independently arranged at the central position of the annular structure to correspond to the magnetic core; the centers of the three components are positioned at the same point; and every two components of the three components are vertical to each other. Signal lead ends of the three components are correspondingly connected with the circuit board. Signals are input / output through the circuit board. Each component is formed by splicing two coils and each coil is correspondingly wound on one ceramic framework. The material of the magnetic core is a heat treated thin permalloy belt, and the permalloy belt is wound in square holes in the centers of the ceramic frameworks. Symmetrical arrangement of the sensors is truly realized by the fluxgate sensor, and the centers of the three-axis sensors are truly focused at the same point, so that measurement errors caused by the sensor are effectively reduced.

Description

technical field

[0001] The invention relates to the technical field of sensors, in particular to a same-point three-component fluxgate sensor used in the field of magnetic field measurement. Background technique

[0002] A sensor is a device that can perceive external information and convert this information into a usable signal according to certain rules. In fact, it is a device that converts external signals into electrical signals. Sensors include photoelectric sensors, pyroelectric sensors, magnetic sensors, chemical sensors, etc. The three-component magnetic sensor is a kind of magnetic sensor, usually used such as figure 1 runway style and figure 2 The ring-type iron core layout shown in the figure is asymmetrical. The reference point of the three sensors deviates from the origin of the coordinates in the process, and because of the asymmetry, the ambient magnetic field is affected by the concentration of the sensor on one sensor. The other two sensors are affected ...

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