An Equal Scale Coil Array Based on Magnetic Focus

Abstract

The invention discloses an equal proportion coil array based on magnetic focusing. The equal proportion coil array comprises a coil array consisting of more than two sub-coils (1), wherein a power supply is arranged in the coil array; the more than two sub-coils (1) are connected in series in sequence; a serial branch circuit formed by the sub-coils (1) is connected to the two ends of the power supply; the sub-coils (1) have coil structures in which leads (2) are wound; and the more than two sub-coils (1) are connected in series in sequence through the leads (2). The equal proportion coil array is simple in structure; a single power supply is adopted for supplying power; through various serial sub-coils 1, multiple types of control over current in a circuit can be realized, and the magnetic focusing effect of the coil array can be effectively enhanced; and the equal proportion coil array has a wide application range, is suitable for coil arrays of various forms, and is particularly suitable for fields with extremely high requirements on the magnetic focusing range such as electromagnetic therapy and buried metal pipeline detection.

Description

technical field [0001] The invention relates to the field of magnetic focusing, in particular to an equal-scale coil array based on magnetic focusing. Background technique [0002] In the fields of electromagnetic therapy, buried metal pipeline detection, etc., it is often necessary to construct a specific form of magnetic field to achieve focus to ensure the accuracy of treatment or inspection, such as figure 1 , figure 2 The shown coil array applied to electromagnetic therapy usually needs to use two or more sub-coils (ie: coil array) to construct the magnetic field. In the prior art, the structure of the coil is generally composed of an insulating tube and a wire wound on the insulating tube, and the number of turns of the wire is the number of turns of the coil. When designing, it is necessary to analyze the wires on each sub-coil with a constant current, and then use the principle of magnetic field vector superposition to design. However, in the actual circuit appli...

AI Technical Summary

Problems solved by technology

Of course, this also imposes strict requirements on the complete matching of the time-varying current of each sub-coil. At the same time, the problem of synchronous control of each current excitation source is also particularly important, making it difficult to achieve in design.

Images