发明授权
- 专利标题： Magnetic field detector having a variable threshold
- 专利标题（中）： 具有可变阈值的磁场检测器
-
申请号： US12401096申请日： 2009-03-10
-
公开(公告)号： US08089270B2公开(公告)日： 2012-01-03
- 发明人: P. Karl Scheller , Ravi Vig
- 申请人： P. Karl Scheller , Ravi Vig
- 申请人地址： US MA Worcester
- 专利权人： Allegro Microsystems, Inc.
- 当前专利权人： Allegro Microsystems, Inc.
- 当前专利权人地址： US MA Worcester
- 代理机构： Daly, Crowley, Mofford & Durkee, LLP
- 主分类号： G01B7/30
- IPC分类号： G01B7/30
摘要：
Apparatus for detecting a passing magnetic article includes a peak detector providing a detector output signal that changes state when the magnetic field signal differs from a magnetic field tracking signal by more than a threshold offset amount. The threshold offset amount is dynamically variable in response to detection of a speed of rotation of the magnetic article and a peak-to-peak signal level of the magnetic field signal.
公开/授权文献
- US20100231202A1 MAGNETIC FIELD DETECTOR HAVING A VARIABLE THRESHOLD 公开/授权日：2010-09-16