摘要
针对现有磁梯度张量定位系统普遍存在的整体尺寸大、系统运行维护成本高,难以实现小型化和低成本化应用等问题,提出基于MEMS传感器的磁梯度张量单点定位系统。该系统采用六棱台式磁梯度张量探头结构设计,利用两个单轴MEMS磁传感器以差分形式构建梯度计,根据六棱台磁梯度张量测量模型解算当前位置磁梯度张量值,通过磁梯度张量单点定位算法计算出磁性目标磁矩与相对距离,进而求解磁矩矢量和位置矢量,最终完成磁性目标定位。静态实验结果表明,基于MEMS传感器的磁梯度张量单点定位系统可有效实现近距离范围内磁性目标探测与定位,系统具有实时性强、成本低和尺寸小等优点,满足探危排爆、入侵监测等场景下小尺寸、低功耗磁探测需求,同时它也可作为小型样机,验证六棱台式超导全张量磁梯度测量系统磁性目标单点定位有效性。
A kind of MEMS magnetic gradient tensor point positioning system based on hexagonal prism structure was studied in this paper.The structure of magnetic gradient tensor probe adopted the hexagonal prism model,and the gradiometer mounted on each edge was obtained by the difference of two uniaxial MEMS magnetic sensors.According to the measurement model of magnetic gradient tensor,the characteristics of magnetic gradient tensor invariants and the single point positioning algorithm of magnetic gradient tensor,the magnetic target could be located directly.The static test results showed that the magnetic gradient tensor single point positioning system designed in this paper could effectively be used for magnetic target location and tracking.
作者
修春晓
周瑜
李光
钟华森
李成豪
XIU Chunxiao;ZHOU Yu;LI Guang;ZHONG Huasen;LI Chenghao(China Electronic Technology Group Corporation, Beijing 100015, China)
出处
《探测与控制学报》
CSCD
北大核心
2021年第4期65-70,共6页
Journal of Detection & Control
关键词
MEMS
磁测量系统
磁梯度张量
单点磁定位
MEMS
magnetic field measurement system
magnetic gradient tensor
magnetic field single point positioning
