发明名称 |
Magnetic field sensor |
摘要 |
A magnetic sensor comprises an orthogonal flux-gate magnetometer having a first sensor head comprising a first magnetic core at least parallel portions of which are formed of magnetic material, and a first detection coil wound around said first magnetic core, said parallel portions of said first magnetic core being placed closely to each other. The magnetic sensor comprises a search-coil magnetometer having a second sensor head comprising a second magnetic core having a central axis placed coaxially with a central axis of the first magnetic core of said orthogonal flux-gate magnetometer, and a second detection coil wound around said second magnetic core. The first sensor head of said orthogonal flux-gate magnetometer is placed in a region in which magnetic flux density is increased through a magnet collection effect by the second magnetic core of said search-coil magnetometer. |
申请公布号 |
US9285436(B2) |
申请公布日期 |
2016.03.15 |
申请号 |
US201414199066 |
申请日期 |
2014.03.06 |
申请人 |
Kyushu University |
发明人 |
Sasada Ichiro |
分类号 |
G01R33/04;G01R33/02;G01R33/028 |
主分类号 |
G01R33/04 |
代理机构 |
Dingman, McInnes & McLane, LLP |
代理人 |
Dingman, McInnes & McLane, LLP |
主权项 |
1. A magnetic sensor comprising:
an orthogonal flux-gate magnetometer having a first sensor head comprising a first magnetic core at least parallel portions of which are formed of magnetic material, and a first detection coil wound around said first magnetic core, said parallel portions of said first magnetic core being placed closely to each other; and a search-coil magnetometer having a second sensor head comprising a second magnetic core having a central axis placed coaxially with a central axis of the first magnetic core of said orthogonal flux-gate magnetometer, and a second detection coil wound around said second magnetic core, wherein: the first sensor head of said orthogonal flux-gate magnetometer is placed in a region in which magnetic flux density is increased through a magnet collection effect by the second magnetic core of said search-coil magnetometer. |
地址 |
JP |