公开(公告)号：US20020144418A1

公开(公告)日：2002-10-10

申请号：US10101831

申请日：2002-03-21

Applicant: NAGANO FUJITSU COMPONENT LIMITED

Inventor： Michiko Endo ,  Katsuya Funakoshi ,  Takashi Arita ,  Masayuki Kato ,  Shinichiro Akieda

IPC: G01C009/06

CPC classification number: G01R33/0035 ,  G01C9/06 ,  G01C9/10 ,  G01C2009/064 ,  G01C2009/107 ,  G01P15/032 ,  G01P15/105

Abstract: A sensor unit includes a support body having a concave surface, a spherical body formed of a magnetic material and placed on the concave surface of the support body so as to roll freely thereon, a permanent magnet producing a magnetic field affecting the magnetic spherical body, and a magnetic sensor detecting a change in the magnetic field caused by the movement of said magnetic spherical body. The magnetic spherical body and the permanent magnet are provided to oppose each other with a given distance therebetween in a vertical direction. The magnetic sensor is provided between the magnetic spherical body and the permanent magnet. An output is produced in accordance with the detection by the magnetic sensor.

Abstract translation: 传感器单元包括具有凹面的支撑体，由磁性材料形成的球形体，并且放置在支撑体的凹面上以便在其上自由滚动，产生影响磁性球体的磁场的永磁体， 以及磁传感器，其检测由所述磁性球体的运动引起的磁场变化。 磁性球体和永磁体被设置为在垂直方向上以给定距离彼此相对。 磁传感器设置在磁性球体和永磁体之间。 根据磁传感器的检测产生输出。