A uniform magnetic field device with controllable direction

Abstract

The invention belongs to the technical field of magnetic field devices and relates to a uniform magnetic field device with controllable direction. The device includes a magnetic field generating device, a bearing, a scale turntable, an experimental sample stage and a base; the inner ring of the bearing is fixed on the base; the scale turntable consists of a turntable and a dial, with a circular opening in the center of the turntable and the scale is located on the periphery of the turntable; The bottom of the turntable is fixed on the outer ring of the bearing; the experimental sample stage passes through the circular opening of the scale turntable and the bearing, and is fixed on the base; the magnetic field generating device is fixed on the scale turntable and is symmetrically distributed on both sides of the experimental sample stage; the experimental sample The top of the stage is located at the center of the magnetic field generated by the magnetic field generating device to ensure uniform magnetic field around the experimental sample. By adjusting the locking knob on the scale dial and bearing, a direction-controllable, uniform and stable magnetic field is generated in a large range near the experimental sample. This device can be used for magnetic experiments that require a direction-controllable magnetic field environment, especially for various Research experiments on magnetic field sensors.

Description

technical field [0001] The invention belongs to the technical field of magnetic field devices, and relates to a direction-controllable uniform magnetic field device. Background technique [0002] Magnetic fields can be said to be ubiquitous, and the study of magnetic fields has a long history, involving many fields such as geophysics, military engineering, biology, medicine, and archaeology. With the development of science and technology, magnetic field has become an effective tool for many scientific researches, and it is more and more important to obtain a uniform and stable magnetic field environment with controllable direction. [0003] At present, there are two main types of magnetic field devices used in scientific experiments. One is to use permanent magnets to generate magnetic fields of different strengths by changing the distance between two permanent magnets. The magnetic field generated in this way cannot ensure uniformity and stability. , and the direction is f...

AI Technical Summary

Problems solved by technology

[0003] At present, there are two main types of magnetic field devices used in scientific experiments. One is to use permanent magnets to generate magnetic fields of different strengths by changing the distance between two permanent magnets. The magnetic field generated in this way cannot ensure uniformity and stability. , and the direction is fixed

The other is to generate a magnetic field by energizing a coil at a fixed position. The magnetic field generated in this way can only be along a certain direction, and the direction cannot be controlled.

There are also some magnetic field devices that consider the direction problem. In 2014, a patent (a 360° rotatable electromagnetic field device, CN204045315U) proposed a device for magnetizing and magnetizing scientific research samples. Not compact enough, easily affected by vibration, unable to ensure the uniformity and stability of the magnetic field near the sample; in 2016, a patent (a rotating magnetic field generator, CN106693817A) proposed a device for enhancing mass transfer during the separation of magnetic carriers , but the device can only rotate at a certain speed and cannot choose a specific magnetic field direction

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