电磁定位系统中发射线圈半径优化设计

An Optimized Design of Radius of Transmitter Coil for Electromagnetic Positioning System

电磁定位系统中通常以多匝线圈来作为发射装置,以磁偶极子定位模型为基础来实现电磁定位技术。然而传统计算电磁定位的方式,只是将多匝线圈的半径简单归一化为一常数r,而忽视了线圈与线圈之间的差异性。对多匝发射线圈建立起多磁偶极子模型,并利用该模型来修正传统计算公式中多匝发射线圈的半径。仿真实验计算多匝线圈的磁感应强度表明,在环数一定的情况下,随着层数的增加,优化后的效果越明显,对计算接收线圈的感应电动势更为准确。

In the electromagnetic positioning system, the coil winding is usually used as a launcher. It is based on magnetic dipole localization model which is the key to realize the electromagnetic positioning technology, However, the traditional way of calculating the electromagnetic positioning only normalized the radius of the coil as a constant r, while the differences between the coil and the coil are ignored. A multi-magnetic dipole model is estabilished for the transmitter coil winding, which is used to modify the radius of the transmitter coilwinding in the traditional calculation formula. The magnetic induction intensity of the coil winding calculated by simula- tion shows when the ring is a certain value, the optimized result is satisfying along with the number of layers in- creased, and the calculation of the induction of receiving coil is more accurate.