发明授权
- 专利标题： Method and apparatus for performing magnetic field measurements using magneto-optic kerr effect sensors
- 专利标题（中）： 使用磁光克尔效应传感器进行磁场测量的方法和装置
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申请号： US474692申请日： 1995-06-07
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公开(公告)号： US5631559A公开(公告)日： 1997-05-20
- 发明人: Steven A. Oliver , Charles A. DiMarzio
- 申请人： Steven A. Oliver , Charles A. DiMarzio
- 申请人地址： MA Boston
- 专利权人： Northeastern University
- 当前专利权人： Northeastern University
- 当前专利权人地址： MA Boston
- 主分类号： G01B11/16
- IPC分类号： G01B11/16 ; G01D5/34 ; G01R33/032 ; G01P3/36
摘要：
A sensor system includes a magneto-optic Kerr effect magnetic field sensing element and an optical system including a light source, at least one polarizer or polarizing element and a detector disposed about the sensing element. The sensing element is responsive to an external magnetic field. In one embodiment, the optical system and sensing element can be arranged to measure the strength of a magnetic field. In another embodiment the optical system and sensing element can be arranged to measure the rotational speed of rotating members.