公开(公告)号：EP2128581A1

公开(公告)日：2009-12-02

申请号：EP08712043.2

申请日：2008-02-27

申请人： Nissan Motor Co., Ltd.

发明人： SHIMADA, Munekatsu ,  SAKURAI, Hiroshi ,  KAWASHITA, Yoshio ,  URAMOTO, Kiyohiro ,  MATSUOKA, Toshimitsu ,  AIHARA, Masao ,  FUJITA, Mitsuaki ,  OOSHIMA, Masaharu

IPC分类号： G01L1/12

CPC分类号： G01L1/125

摘要： A magnetostrictive stress sensor (11,12,13, 14, 15, 16) includes: a magnetic member {20, (107,108,109,110, 111, 112)} having a magnetostriction; a permanent magnet (30, 35, 113) adjacent to the magnetic member; a magnetic sensor (40, 104A, 104 B) for detecting a leak magnetic flux on a side opposite to the permanent magnet with respect to the magnetic member, wherein the leak magnetic flux changes according to a stress acting on the magnetic member and the magnetic sensor detects the change of the leak magnetic flux, to thereby detect the stress acting on the magnetic member, and a direction (21, 108A, 109A) of the stress acting on the magnetic member is substantially orthogonal to a magnetizing direction (31, 31, 113A) of the permanent magnet.

摘要翻译： 磁致伸缩应力传感器（11,12,13,14,15,16）包括：具有磁致伸缩的磁性部件{20，（107,108,109,110,111,112）}} 邻近所述磁性构件的永磁体（30,35,113）; 磁传感器（40,104A，104B），用于检测相对于所述磁性部件与所述永久磁体相反的一侧的泄漏磁通量，其中所述漏磁通量根据作用在所述磁性部件和所述磁性部件上的应力而变化 传感器检测泄漏磁通的变化，从而检测作用在磁性构件上的应力，并且作用在磁性构件上的应力的方向（21,108A，109A）基本上与磁化方向（31,31 ，113A）。