发明授权
US06297627B1 Detection of passing magnetic articles with a peak-to-peak percentage threshold detector having a forcing circuit and automatic gain control
有权
用具有强制电路和自动增益控制的峰 - 峰百分比阈值检测器检测通过的磁性制品
- 专利标题: Detection of passing magnetic articles with a peak-to-peak percentage threshold detector having a forcing circuit and automatic gain control
- 专利标题(中): 用具有强制电路和自动增益控制的峰 - 峰百分比阈值检测器检测通过的磁性制品
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申请号: US09239023申请日: 1999-01-27
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公开(公告)号: US06297627B1公开(公告)日: 2001-10-02
- 发明人: Jay M. Towne , Ravi Vig , P. Karl Scheller
- 申请人: Jay M. Towne , Ravi Vig , P. Karl Scheller
- 主分类号: G01P348
- IPC分类号: G01P348
摘要:
A proximity detector for sensing a magnetic field includes a magnetic-field-to-voltage transducer for generating a signal voltage Vsig that is proportional to the magnetic field, a peak-to-peak percentage threshold detector coupled to the magnetic-field-to-voltage transducer to receive the signal voltage Vsig and for providing an output signal voltage Vout and a forcing circuit coupled to the peak-to-peak percentage threshold detector for forcing and maintaining the value of the output signal voltage Vout at a predetermined value during an initial startup interval of the proximity detector. The proximity detector may further include an automatic gain control circuit coupled to the forcing circuit to provide a proximity detector capable of operating in a peak-to-peak percentage threshold detector mode with automatic gain control.