公开(公告)号：US20150338245A1

公开(公告)日：2015-11-26

申请号：US14655837

申请日：2013-02-22

申请人： Yoshinao TATEI ,  Takeshi MUSHA ,  Hajime NAKAJIMA ,  Takashi OKAMURO ,  Masanori NIMURA

发明人： Yoshinao TATEI ,  Takeshi MUSHA ,  Hajime NAKAJIMA ,  Takashi OKAMURO ,  Masanori NIMURA

IPC分类号： G01D5/244 ,  G01D5/20

CPC分类号： G01D5/244 ,  G01D5/145 ,  G01D5/2006 ,  G01P3/4815

摘要： A rotation number detector according to an embodiment is a rotation number detector that detects the number of rotations of a magnet attached to a rotating body by using a power generation unit. The power generation unit includes N (N is a natural number equal to or larger than 1) power generation elements, each including a magnetic wire in which magnetization reversal occurs due to a large Barkhausen effect and a pickup coil that is wound around the magnetic wire. The magnetic wire is longer than a wound portion of the pickup coil in an extension direction of the magnetic wire of the power generation elements. The magnetic wire is set above a rotation center of the magnet.

摘要翻译： 根据实施例的旋转数检测器是通过使用发电单元检测附接到旋转体的磁体的转数的旋转数检测器。 发电单元包括N（N是等于或大于1的自然数）的发电元件，每个发电元件包括​​由于大的巴克豪森效应而产生磁化反转的磁线和缠绕在磁线上的拾取线圈 。 在发电元件的磁线的延伸方向上，磁线长于拾取线圈的卷绕部分。 磁线设置在磁体的旋转中心的上方。