Magnetic motion sensor

Details Magnetic motion sensor Magnetic motion sensor

2007-05-08

2007-05-08

Patidar, Jay M. (Department: 2862)

Electricity: measuring and testing

Electrical speed measuring

Including speed-related frequency generator

C324S207250, C324S207200, C324S173000, C324S166000

Reexamination Certificate

active

11210104

ABSTRACT:
A magnetic motion sensor has: two magnetic sensors aligned in a direction along which changes in a magnetic field shift for detecting an appearance of the changes; a differential means for taking out a differential signal of output signals from these two magnetic sensors; and a timing detection means for generating a pulse, indicating a timing at which the changes in a magnetic field pass through either of the magnetic sensors, when an output signal of the magnetic sensor in question strides over a threshold value, while generating a pulse, indicating a timing at which the changes in a magnetic field pass through in between the magnetic sensors, when the differential signal strides over the threshold value.

REFERENCES:
patent: 6100682 (2000-08-01), Schroeder
patent: 6140813 (2000-10-01), Sakanoue et al.
patent: 6310474 (2001-10-01), Schroeder
patent: 6339324 (2002-01-01), Sakanoue et al.
patent: 6469497 (2002-10-01), Schroeder
patent: 6498482 (2002-12-01), Schroeder
patent: 6924639 (2005-08-01), Uenoyama
patent: 07-209311 (1995-08-01), None

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